Enlace original:
https://apps.who.int/iris/handle/10665/62214
Clements, C. John
,
Milstien, Julie B
,
Grabowsky, Mark
,
WHO Expanded Programme on Immunization
,
[Research on alternative measles vaccines : technical background and recommended format for reporting field trials / C. J. Clements, Julie B. Milstien, M. Grabowsky]