TY  - RPRT
TI  - Difficulties in polio eradication.
AU  - H J Eggers
PY  - 2001
DO  - 10.1016/s0140-6736(05)71281-2
UR  - https://pubmed.ncbi.nlm.nih.gov/11273092/
ID  - 11273092
ER  -