Infeksi Chlamydia trachomatis, Mycoplasma spp., Ureaplasma urealyticum, dan Ureaplasma parvum sebagai faktor risiko infeksi HPV pada kasus kanker serviks = Infection of Chlamydia trachomatis, Mycoplasma spp., Ureaplasma urealyticum, and Ureaplasma parvum as a risk factor for HPV infection in cases of cervical cancer