The role of human papillomavirus (HPV) in the development of benign and malignant changes of the oral mucosa : doctoral thesis = Uloga humanih papiloma virusa (HPV) u razvoju dobroćudnih i zloćudnih promjena sluznice usne šupljine : doktorski rad - Knežević, Marjana; Mravak-Stipetić, Marinka; Grce, Magdalena (2017)