TY - GEN AU - Croon,M C TI - Some epidemiological data collected from the epidemic of poliomyelitis in 1956 PY - 1966///0129 KW - Adolescent KW - Adult KW - Child KW - Child, Preschool KW - Female KW - Humans KW - Infant KW - Male KW - Netherlands KW - Poliomyelitis KW - epidemiology KW - Pregnancy N1 - Publication Type: Journal Article ER -