TY  - RPRT
TI  - Outside Europe. Is poliomyelitis a serious problem in developing countries?--the Danfa experience.
AU  - D D Nicholas
AU  - J H Kratzer
AU  - S Ofosu-Amaah
AU  - D W Belcher
PY  - 1977
DO  - 10.1136/bmj.1.6067.1009
UR  - https://pubmed.ncbi.nlm.nih.gov/856396/
ID  - 856396
ER  -