Name Info Provider Link
subscription/membership/fee required Elsevier Science https://linkinghub.elsevier.com/retrieve/pii/S1047-2797(11)00023-8
Measles free resource MedlinePlus Health Information https://medlineplus.gov/measles.html
subscription/membership/fee required ClinicalKey https://www.clinicalkey.com/content/playBy/pii?v=S1047-2797(11)00023-8