National Center for Complementary and Integrative Health (NIH).
DetaljerUnited States National Library of Medicine.
Detaljer[Markedsføringstillatelse for naturlegemidler]
Statens legemiddelverk.
Detaljer[NHS, Specialist Pharmacy Service, Medicines Articles (UKMi - UK Medicines Information)]
National Health Services (NHS).
Detaljer