Spatial distribution of human papillomavirus vaccination coverage in the state of Maranhão, Brazil.
The aim of this study was to describe the spatial distribution of human papillomavirus (HPV) vaccination coverage in the state of Maranhão, Brazil. We conducted a retrospective ecological study using data from three age cohorts of boys (age 16, 17 and 18) and girls (age 13, 14 and 15). The units of analysis were munici...