Name Info Provider Link
subscription/membership/fee required Elsevier Science https://linkinghub.elsevier.com/retrieve/pii/S1477-8939(08)00018-5
Traveler's Health free resource MedlinePlus Health Information https://medlineplus.gov/travelershealth.html
subscription/membership/fee required ClinicalKey https://www.clinicalkey.com/content/playBy/pii?v=S1477-8939(08)00018-5