Beyond expectations: 40 years of EPI.
World Health Organization, 1211 Geneva 27, Switzerland. Electronic address: chanm@who.int.
Margaret
M
Chan
D014943:Global Health / Q000266:history; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D017589:Immunization Programs / Q000266:history* / Q000458:organization & administration; D007391:International Cooperation / Q000266:history*; D011634:Public Health / Q000266:history