Quirynen Marc, Teughels Wim, De Soete Marc, van Steenberghe Daniel
Department of Periodontology, School of Dentistry, Oral Pathology and Maxillofacial Surgery, Catholic University Leuven, Belgium.
Periodontol 2000. 2002;28:72-90. doi: 10.1034/j.1600-0757.2002.280104.x.