“…For five frozen samples (samples #1, #2, #3, #4, and #5), HPV-DNA testing targeting 16 high-and low-risk HPV genotypes (genotypes 6,11,16,18,30,31,33,35,39,45,51,52,56,58,59, and 66) was performed using the multiplex PCR method (PapiPlex) at the GLab Pathology Center Co., Ltd (Sapporo, Japan) [48]. In addition, for three FFPE samples (sample #6, #7, and #8), HPV-16 and HPV-18 viral sequences were analyzed by using CANCER-PLEX® as previously described [23].…”