Molecular variants of human papillomavirus type 16 from four continents suggest ancient pandemic spread of the virus and its coevolution with humankind Authors: S Y Chan, L Ho, C K Ong, V Chow, B Drescher, M Dürst, J ter Meulen, L Villa, J Luande, H N Mgaya Abstract We have amplified by the polymerase chain reaction, […]