Medical Microbiology / HUMAN PAPILLOMAVIRUS / Humans / Sexually transmitted infections / Male / Polymerase Chain Reaction / Squamous Cell Carcinoma / Clinical Sciences / Aged / Middle Aged / Public health systems and services research / Retrospective Studies / Nested PCR / Control Group / Case Control Studies / Polymerase Chain Reaction / Squamous Cell Carcinoma / Clinical Sciences / Aged / Middle Aged / Public health systems and services research / Retrospective Studies / Nested PCR / Control Group / Case Control Studies
Medical Microbiology / HUMAN PAPILLOMAVIRUS / Humans / Sexually transmitted infections / Male / Polymerase Chain Reaction / Squamous Cell Carcinoma / Clinical Sciences / Aged / Middle Aged / Public health systems and services research / Retrospective Studies / Nested PCR / Control Group / Case Control Studies / Polymerase Chain Reaction / Squamous Cell Carcinoma / Clinical Sciences / Aged / Middle Aged / Public health systems and services research / Retrospective Studies / Nested PCR / Control Group / Case Control Studies