Fibrous-hyperplastic changes of oral cavity mucosa. Own observations Journal title: Medycyna Ogólna i Nauki o Zdrowiu Authors: Bogumił Lewandowski, Katarzyna Zdonek, Małgorzata Paluszkiewicz Subject(s): Orthopedics, Health Care Sciences & Services, Medicine, Research & Experimental, Public, Environmental & Occupational Health, Primary Health Care