Agency for Health Care Policy and Research
http://www.ahcpr.gov/
Alzheimer's Association
http://www.alz.org/
American Academy of Addiction Psychiatry
http://www.aaap.org/
American Academy of Allergy Asthma & Immunology
http://www.aaaai.org/
American Academy of Audiology
http://www.audiology.org/
American Academy of Cardiovascular Perfusion
http://members.aol.com/officeAACP/home.html
American Academy of Child & Adolescent Psychiatry
http://www.aacap.org/
American Academy of Clinical Psychiatrists
http://www.aacp.com/
American Academy of Dermatology
http://www.aad.org/
American Academy of Emergency Medicine
http://www.aaem.org/
American Academy of Facial Plastic and Reconstructive Surgery
http://www.facial-plastic-surgery.org/
American Academy of Family Physicians
http://www.aafp.org/
American Academy of Neurological and Orthopaedic Surgeons
http://www.aanos.org/
American Academy of Neurology
http://www.aan.com/
American Academy of Ophthalmology
http://www.eyenet.org/
American Academy of Orthopaedic Surgeons
http://www.aaos.org/
American Academy of Otolaryngologic Allergy
http://www.allergy-ent.com/
American Academy of Otolaryngology - Head and Neck Surgery
http://www.entnet.org/
American Academy of Pain Medicine
http://www.painmed.org/
American Academy of Pediatrics
http://www.aap.org/
American Academy of Physical Medicine and Rehabilitation
http://www.aapmr.org/
American Academy of Sleep Medicine
http://www.aasmnet.org/
American Association for Cancer Research
http://www.aacr.org/
American Association for Chronic Fatigue Syndrome
http://www.aacfs.org/
American Association for Geriatric Psychiatry
http://www.aagpgpa.org/
American Association for Ophthalmic Standardized Echography
http://www.echography.com/aaose.html
American Association for Pediatric Ophthalmology and Strabismus
http://med-aapos.bu.edu/
American Association for Respiratory Care
http://www.aarc.org/
American Association for the Study of Liver Diseases
http://www.aasld.org/
American Association for the Surgery of Trauma
http://www.aast.org/
American Association for Thoracic Surgery
http://www.aats.org/
American Association of Cardiovascular and Pulmonary Rehabilitation
http://www.aacvpr.org/
American Association of Clinical Endocrinologists
http://www.aace.com/indexjava.htm
American Association of Electrodiagnostic Medicine
http://www.aaem.net/
American Association of Endocrine Surgeons
http://www.endocrinesurgeons.org/
American Association of Gynecologic Laparoscopists
http://www.aagl.com/
American Association of Hip and Knee Surgeons
http://www.aahks.org/
American Association of Neurological Surgeons
http://www.neurosurgery.org/aans/
American Association of Neuropathologists
http://www.aanp-jnen.com/aanpframes.html
American Association of Orthopaedic Foot and Ankle Surgeons
http://www.footdocs.org/
American Association of Public Health Physicians
http://www.aaphp.org/
American Autoimmune Related Diseases Association
http://www.aarda.org/
American Brain Tumor Association
http://www.abta.org/
American Cancer Society
http://www.cancer.org/
American Clinical Neurophysiology Society
http://www.acns.org/
American College of Cardiology
http://www.acc.org/
American College of Chest Physicians
http://www.chestnet.org/
American College of Emergency Physicians
http://www.acep.org/
American College of Gastroenterology
http://www.acg.gi.org/acghome.html
American College of Obstetricians and Gynecologists
http://www.acog.com/
American College of Occupational and Environmental Medicine
http://www.acoem.org/
American College of Physicians - American Society of Internal Medicine
http://www.acponline.org/
American College of Preventive Medicine
http://www.acpm.org/
American College of Radiation Oncology
http://www.acro.org/
American College of Radiology
http://www.acr.org/
American College of Rheumatology
http://www.rheumatology.org/index.asp
American College of Sports Medicine
http://www.acsm.org/
American College of Surgeons
http://www.facs.org/
American Diabetes Association
http://www.diabetes.org/
American Dietetic Association
http://www.eatright.org/
American Gastroenterological Association
http://www.gastro.org/
American Geriatrics Society
http://www.americangeriatrics.org/
American Head and Neck Society
http://www.headandneckcancer.org/
American Headache Society
http://ahsnet.org/
American Heart Association
http://www.americanheart.org/
American Hepato-Pancreato-Biliary Association
http://www.ahpba.org/
American Infertility Association
http://www.americaninfertility.org/
American Institute of Ultrasound in Medicine
http://www.aium.org/
American Laryngological Association
http://www.alahns.org/
American Liver Foundation
http://www.liverfoundation.org/
American Lung Association
http://www.lungusa.org/
American Medical Association
http://www.ama-assn.org/
American Neurological Association
http://www.aneuroa.org/
American Neurotology Society
http://itsa.ucsf.edu/~ajo/ANS/ANS.html
American Orthopaedic Foot and Ankle Society
http://www.aofas.org/
American Orthopaedic Society for Sports Medicine
http://www.sportsmed.org/
American Osteopathic College of Otolaryngology-Head and Neck Surgery
http://www.aocoohns.org/aocohns.htm
American Otological Society
http://itsa.ucsf.edu/~ajo/AOS/AOS.html
American Pain Society
http://www.ampainsoc.org/
American Pediatric Surgery Association
http://www.eapsa.org/
American Psychiatric Association
http://www.psych.org/
American Rhinologic Society
http://www.american-rhinologic.org/cgi-bin/menu.cgi?m=main.menu&state
American Roentgen Ray Society
http://www.arrs.org/
American Shoulder and Elbow Surgeons
http://www.aaos.org/wordhtml/ases/homeases.htm
American Society for Dermatologic Surgery
http://www.asds-net.org/
American Society for Gastrointestinal Endoscopy
http://www.asge.org/
American Society for Laser Medicine and Surgery
http://www.aslms.org/index.htm
American Society for Microbiology
http://www.asmusa.org/
American Society for Reproductive Medicine
http://www.asrm.com/
American Society for Surgery of the Hand
http://www.hand-surg.org/
American Society for Therapeutic Radiology and Oncology
http://www.astro.org/
American Society for Virology
http://www.mcw.edu/asv/
American Society of Abdominal Surgeons
http://www.gis.net/~absurg/
American Society of Addiction Medicine
http://www.asam.org/
American Society of Anesthesiologists
http://www.asahq.org/homepageie.html
American Society of Bariatric Physicians
http://www.asbp.org/
American Society of Breast Surgeons
http://www.breastsurgeons.org/
American Society of Cataract and Refractive Surgery
http://www.ascrs.org/
American Society of Clinical Oncology
http://www.asco.org/
American Society of Clinical Pathologists
http://www.ascp.org/
American Society of Colon and Rectal Surgeons
http://www.fascrs.org/ascrs-home.html
American Society of Critical Care Anesthesiologists
http://www.gasnet.org/ascca/
American Society of Echocardiography
http://asecho.org/
American Society of Emergency Radiology
http://www.erad.org/
American Society of General Surgeons
http://www.theasgs.org/
American Society of Hematology
http://www.hematology.org/
American Society of Human Genetics
http://www.faseb.org/genetics/ashg/ashgmenu.htm
American Society of Hypertension
http://www.ash-us.org/
American Society of Neuroradiology
http://www.asnr.org/
American Society of Nuclear Cardiology
http://www.asnc.org/
American Society of Ophthalmic Plastic and Reconstructive Surgery
http://www.asoprs.org/
American Society of Parasitologists
http://www-museum.unl.edu/asp/
American Society of Pediatric Hematology/Oncology
http://www.aspho.org/
American Society of Pediatric Nephrology
http://www.aspneph.com/default.htm
American Society of Pediatric Neuroradiology
http://www.asnr.org/aspnr/
American Society of Plastic Surgeons
http://www.plasticsurgery.org/
American Society of Transplant Surgeons
http://www.asts.org/
American Society of Tropical Medicine & Hygiene
http://www.astmh.org/
American Spine Injury Association
http://www.asia-spinalinjury.org/
American Thoracic Society
http://www.thoracic.org/
American Tinnitus Association
http://www.ata.org/
American Urogynecologic Society
http://www.augs.org/
American Urological Association
http://auanet.org/index_hi.cfm
Amyotrophic Lateral Sclerosis Association
http://www.alsa.org/
Anxiety Disorders Association of America
http://www.adaa.org/
Arthritis Foundation
http://www.arthritis.org/
Arthritis National Research Foundation
http://www.curearthritis.org/
Asthma and Allergy Foundation of America
http://www.aafa.org/
Centers for Disease Control and Prevention
http://www.cdc.gov/
College of American Pathologists
http://www.cap.org/
Crohn's and Colitis Foundation of America
http://www.ccfa.org/
U.S. Department of Health and Human Services
http://www.os.dhhs.gov/
Epilepsy Foundation
http://www.efa.org/
European Academy of Anaesthesiology
http://eaa-web.eu.org/
European Academy of Otology & Neuro-Otology
http://www.eaono.org/
European Alliance of Neuromuscular Disorders Associations
http://www.sonnet.co.uk/eamda/
European Association for Cancer Research
http://www.eacr.org/
European Association for Cardio-thoracic Surgery
http://www.eacts.org/
European Association for Endoscopic Surgery
http://www.eaes-eur.org
European Association for the Study of Diabetes
http://www.easd.org/
European Association for the Study of the Liver
http://journals.munksgaard.dk/tidsskrifter.nsf/ekstra+sider/EASL
European Association for Vision and Eye Research
http://www.ever.be/
European Association of Cardiothoracic Anaesthesiologists
http://www.eacta.org/
European Association of Neurosurgical Societies
http://www.eans.org/index-s.html
European Association of Plastic Surgeons
http://www.plasticien.com/
European Association of Surgical Sciences
http://www.eass.it/
European Association of Urology
http://www.uroweb.org/
European Atherosclerosis Society
http://www.elsevier.nl/homepage/sab/eas/
European Cancer Prevention Organization
http://www.uicc.org/others/ecp/ecp.html
European College of Sport Science
http://www.dshs-koeln.de/ecss/ecss.htm
European Council on Eating Disorders
http://www.psyctc.org/eat_d/eced/eced.htm
European Federation of Endocrinology Societies
http://www.euro-endo.org/
European League Against Rheumatism
http://www.eular.org/
European Neuroendocrine Association
http://www.eneassoc.org/
European Paediatric Orthopaedic Society
http://ospiti.cilea.it/ortopedia/
European Respiratory Society
http://www.ersnet.org/0/0/0.asp
European Sleep Research Society
http://www.esrs.org/
European Society for Emergency Medicine
http://www.diesis.com/eusem/home/
European Society for Intravenous Anaesthesia
http://www.eurosiva.org/
European Society for Noninvasive Cardiovascular Dynamics
http://www2.mf.uni-lj.si/~esnicvd/
European Society for Paediatric Urology
http://www.espu.org/
European Society for Pediatric Endocrinology
http://www.unige.ch/efes/members/espe.html
European Society for Primary Care Gastroenterology
http://www.espcg.org/
European Society for Sexual and Impotence Research
http://www.essir.net/
European Society for Therapeutic Radiology and Oncology
http://www.estro.be/estro/Index.html
European Society for Vascular Surgery
http://www.esvs.org/

European Society of Anaesthesiologists
http://www.euroanesthesia.org/
European Society of Breast Imaging
http://www.eusobi.org/templ/master_01.php?lid=1
European Society of Cardiology
http://www.escardio.org/
European Society of Cataract and Refractive Surgeons
http://www.escrs.ie/
European Society of Contraception
http://www.contraception-esc.com/
European Society of Gastrointestinal and Abdominal Radiology
http://www.esgar.org/
European Society of Gynecology
http://www.seg-web.org/
European Society of Intensive Care Medicine
http://www.esicm.org/
European Society of Neuroradiology
http://www.esnr.org/00.asp
European Society of Paediatric Gastroenterology, Hepatology and Nutrition
http://www.meb.uni-bonn.de/espghan/
European Society of Pediatric Otorhinolaryngology
http://www.eur.nl/FGG/KNO/ACTIF/espo.htm
European Society of Regional Anaesthesia
http://www.esraeurope.org/
European Society of Sports Traumatology, Knee Surgery and Arthroscopy
http://esska.org/
European Society of Surgical Oncology
http://www.esso-surgeonline.be/
European Society of Thoracic Imaging
http://www.esti-society.org/
European Thyroid Association
http://www.eurothyroid.com/
Food and Drug Administration
http://www.fda.gov/
Glaucoma Research Foundation
http://www.glaucoma.org/index.html
Leukemia & Lymphoma Society
http://www.leukemia.org/hm_lls
National Alliance of Breast Cancer Organizations
http://www.nabco.org/
National Ataxia Foundation
http://www.ataxia.org/
National Cancer Institute
http://www.nci.nih.gov/
National Center for Health Statistics
http://www.cdc.gov/nchs/default.htm
National Eye Institute
http://www.nei.nih.gov/
National Headache Foundation
http://www.headaches.org/
National Heart, Lung, and Blood Institute
http://www.nhlbi.nih.gov/
National Institute of Neurological Disorders and Stroke
http://www.ninds.nih.gov/
National Institute on Drug Abuse
http://www.nida.nih.gov/NIDAHome2.html
National Multiple Sclerosis Society
http://www.nmss.org/
National Neurofibromatosis Foundation
http://www.nf.org/
National Osteoporosis Foundation
http://www.nof.org/
National Parkinson Foundation
http://www.parkinson.org/
National Spinal Cord Injury Association
http://www.spinalcord.org/
National Stroke Association
http://www.stroke.org/
National Institutes of Health
http://www.nih.gov/
National Library of Medicine
http://www.nlm.nih.gov/
Radiological Society of North America
http://www.rsna.org/
Society of American Gastrointestinal Endoscopic Surgeons
http://www.sages.org/
Society of Cardiovascular & Interventional Radiology
http://www.scvir.org/
Society of Critical Care Medicine
http://www.sccm.org/
Society of Nuclear Medicine
http://www.snm.org/
Society of Thoracic Surgeons
http://www.sts.org/
The American Thyroid Association
http://www.thyroid.org/
The Endocrine Society
http://www.endo-society.org/