- Author:
Siang Yong TAN
1
;
Nate PONSTEIN
2
Author Information
- Publication Type:Journal Article
- MeSH: History, 20th Century; Humans; Philately; Poliomyelitis; history; prevention & control; Poliovirus Vaccine, Inactivated; history; United States
- From:Singapore medical journal 2019;60(1):9-10
- CountrySingapore
- Language:English