| frequency of human papillomavirus infection, coinfection, and association with different risk factors in colombia. | the aims of this study were to provide new insights into infection patterns of six high-risk human papillomaviruses (hr-hpv-16, -18, -31, -33, -45, and -58) and two low-risk hpv types (lr-hpv-6 and -11), their association with risk factors and coinfection. | 2011 | 21296271 |