Geographical and social variations in the incidence of notified poliomyelitis.
D005843:Geography; D006801:Humans; D015994:Incidence; D011051:Poliomyelitis / Q000453:epidemiology*
POLIOMYELITIS/epidemiology
Br Med J. 1950 Dec 30;2(4695):1473-5
14792064
Mon Bull Minist Health Public Health Lab Serv. 1953 Jul;12:131-44
13087011
Br Med J. 1949 Aug 13;2(4623):357
18137194