Aerospace Medical Association Aviation Human Factors Aviation Optical and Medical Limited Aviation, Space & Environmental Medicine Journal - Online Danske Flyvelægers Organisation (DAFLO) Eye Fly FAA - Civil Aeromedical Library FAA - Medical Certification Flight Sight International Academy of Aviation & Space Medicin MedExplorer NASA - Human Factors Reaserch and Technology Norsk Flyvemedicinsk Forening Pilot Medical Solutions Royal Aeronautical Society - Human Factors Group SAFE Association USAF - Human Effectiveness Directorate Virtual Flight Surgeons