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 • American Vein & Lymphatic Society (AVLS)
 • American Venous Forum
 • European Society for Vascular Surgery (ESVS)
 • Marfan Foundation
 • American Academy of Dermatology (AAD)
 • British Association of Dermatologists (BAD)
 • Dermatology Atlas
 • DermNet!
 • Dermnet.com
 • European Academy of Dermatology and Venereology (EADV)
 • National Alopecia Areata Foundation (NAAF)
 • National Rosacea Society (NRS)
 • Skin Care Guide
 • Skin Therapy Letter
 • American Academy of Otolaryngology–Head and Neck Surgery (AAO-HNS)
 • American Laringological Association (ALA)
 • American Otological Society (AOS)
 • American Rhinologic Society (ARS)
 • World Federation of the Deaf (WFD)
 • Age and Ageing
 • American Association for Geriatric Psychiatry (AAGP)
 • American Geriatrics Society (AGS)
 • British Geriatrics Society (BGS)
 • Brown University’s Center for Gerontology and Healthcare Research
 • European Geriatric Medicine Society (EuGMS)
 • Federal Interagency Forum on Aging-Related Statistics
 • Gerontological Society of America (GSA)
 • Gerontology Research Group (GRG)
 • GeriatricsCareOnline.org
 • International Association of Gerontology and Geriatrics (IAGG)
 • Journal of the American Geriatrics Society
 • National Institute on Aging (NIA)
 • Nursing Home Toolkit
 • The Lancet Healthy Longevity
 • Allen brain map
 • Alzheimer’s Association
 • American Academy of Neurology (AAN)
 • Dizziness-and-balance.com
 • European Academy of Neurology (EAN)
 • International League Against Epilepsy (ILAE)
 • National Institute of Neurological Disorder and Stroke (NINDS)
 • World Federation of Neurology (WFN)
 • American Headache Society (AHS)
 • British Association for the Study of Headache (BASH)
 • Headache
 • International Headache Classification (ICHD-3)
 • International Headache Society (IHS)
 • National Headache Foundation (NHF)

 • American Stroke Association (ASA)
 • Australian and New Zealand Clinical Guidelines for Stroke Management
 • Canadian Stroke Best Practice Recommendations
 • European stroke organisation (ESO) guidelines
 • European Stroke Journal
 • One stop in stroke
 • Stroke
 • Stroke Foundation
 • World Stroke Organization (WSO)
 • American College of Obstetricans and Gynecologists (ACOG)
 • Contemporary OB/GYN
 • European Menopause and Andropause Society (EMAS)
 • International Menopause Society (IMS)
 • Menopause
 • Menopause Rating Scale
 • North American Menopause Society (NAMS)
 • Royal College of Obstetricians and Gynaecologists (RCOG)
 • Society of Obstetricians and Gynaecologists of Canada (SOGC)
 • A Cancer Journal for Clinicians
 • American Cancer Society (ACS), YouTube!
 • American Institute for Cancer Research (AICR)
 • American Society of Clinical Oncology (ASCO)
 • Cancer Drug Iinteractions
 • Cancer World
 • Cancernetwork
 • European Commission Initiative on Breast Cancer (ECIBC)
 • European Society for Medical Oncology (ESMO)!
 • Global Cancer Observatory (GCO)
 • International Agency for Research on Cancer (IARC)
 • Know Your Chances, NCI
 • National Cancer Institute (NCI), PDQ!
 • National Comprehensive Cancer Network (NCCN)
 • Radical Remission
 • The Oncologist
 • Union for International Cancer Control (UICC)
 • American Academy of Ophthalmology (AAO)
 • American Journal of Ophthalmology
 • European Glaucoma Society (EGS)
 • International Myopia Institute (IMI)
 • Review of Optometry
 • American Academy of Pediatrics (AAP)
 • Child and Adolescent Causes of Death Estimation (CA CODE)
 • Data Resource Center for Child and Adolescent Health (DRC)
 • DrGreene.com
 • General Pediatrician’s View of the Internet
 • Heart to Heart International Children's Medical Alliance
 • Pediatrics, eMedicineHealth
 • American Academy of Sleep Medicine (AASM)
 • American Sleep Apnea Association (ASAA)
 • British Snoring & Sleep Apnoea Association (BSSAA)
 • European Sleep and Research Society (ESRS)
 • National Sleep Foundation (NSF)
 • Sleep Apnoea Trust Association (SATA)
 • Sleep Research Society (SRS)
 • World Sleep Society (WSS)
 • American Dental Association (ADA)
 • Webdental
 • American Association of Neurological Surgeons (AANS)
 • American College of Surgeons (ACS)!
 • American Society of Anesthesiologists (ASA)
 • Congress of Neurological Surgeons (CNS)
 • Enhanced Recovery After Surgery (ERAS)
 • Organ Procurement and Transplantation Network (OPTN) policies
 • Preoperative Association
 • Skeptical Scalpel
 • Society for Perioperative Assessment and Quality Improvement (SPAQI)
 • WeBSurg