Occurrence, genotypic characterization, and patterns of shedding of human polyomavirus JCPyV and BKPyV in urine samples of healthy individuals in São Paulo, Brazil - Urbano, Paulo Roberto Palma; Oliveira, Renato Reis; Romano, Camila Malta; Pannuti, Claudio Sergio; Fink, Maria Cristina Domingues da Silva (Journal of Medical Virology, 2016)