Valdar stofnanir

NCCN, The National Comprehensive Cancer Network
Landlæknir, Klínískar leiðbeiningar á heimasíðu Landlæknisembættisins
SBU, Statens beredning for medicinsk utvardering
NGC, National Guideline Clearinghouse
NICE, National Institute for Health and Clinical Excellence
SIGN, Scottish Intercollegiate Guidelines Network
Aðrir vefir með klínískum leiðbeiningum