[1] Univ Hosp Vigo, Dept Microbiol, Vigo, Spain
[2] Univ Hosp Vigo, Dept Gynecol, Vigo, Spain
[3] Univ Hosp Ourense, Dept Microbiol, Orense, Spain
[4] Univ Hosp Vigo, Dept Pathol, Vigo, Spain
[5] Univ Hosp Ourense, Dept Gynecol, Orense, Spain
[6] Univ Hosp Asturias, Dept Virol, Oviedo, Spain