Opportunity for catch-up HPV vaccination in young women after first delivery - Rama, Cristina Helena; Villa, Luisa L.; Pagliusi, Sonia; Andreolli, Maria A.; Costa, Maria C.; Thomann, Patricia; Alves, Venancio A.F.; Longatto-Filho, Adhemar; Eluf-Neto, José (Journal of Epidemiology & Community Health, 2010)