TY  - RPRT
TI  - Retraction: human papillomavirus subtype 16b.
AU  - J Tidy
AU  - P J Farrell
DO  - 10.1016/s0140-6736(89)92987-5
UR  - https://pubmed.ncbi.nlm.nih.gov/2574815/
ID  - 2574815
ER  -