Some countries such as Spain have two member organisations in IFMSA since Catalonia has a locale organisation, AECS, whereas the rest of Spain is organised under IFMSA-Spain.
Visse lande som fx Spanien har to medlemsorganisationer i IFMSA, da Catalonien har en lokale organisationen, AECS, hvor resten af Spanien er organiseret under IFMSA-Spain.