This study will create a specimen repository with which to test future novel hypotheses related to HPV infection among men. To assess other genetic, infectious, or environmental factors that may influence acquisition and persistence of HPV infections in men, whole blood, serum, exfoliated penile cell samples, and oral cells will be stored in aliquots for future analyses as funding becomes available. Using banked specimens preserved for DNA, RNA, and protein analyses, we will be able to assess novel biomarkers such as methylation status of oncogenic HPV, polymorphisms in genes involved in innate immunity (e.g., TLR genes), and mRNA of the E6 and E7 HPV oncoproteins in the future.