... Merino-Salas, Fernando López-Carmona Pintado, SalvadorArias-Santiago, Jacinto Orgaz-Molina, Maria Sierra Giron-Prieto, Santiago Melón, Mar a De O a, Marta-Elena Alvarez-Argüelles, João Paulo Oliveira-Costa, ... Chapter 1Molecular Diagnosis of Human PapillomavirusInfectionsSantiago Melón, Marta Alvarez-Argüelles and Mar a de O a Additional information is available at the end of the chapterhttp://dx.doi.org/10.5772/557061. ... clinical outcomes. HPV 16 variants have been grouped into sixdistinct phylogenetic branches: E (European), AA (Asian-American), Af1(African 1), Af2(African 2), NA (North American), As (Asian)...