TY  - RPRT
TI  - Letter: Poliomyelitis immunity gaps.
AU  - N R Grist
AU  - E J Bell
AU  - D Reid
AU  - T S Wilson
PY  - 1976
DO  - 10.1136/bmj.2.6027.107-c
UR  - https://pubmed.ncbi.nlm.nih.gov/1276797/
ID  - 1276797
ER  -