Cold-knife conization versus photodynamic therapy with topical 5-aminolevulinic acid (5-ALA) in cervical intraepithelial neoplasia (CIN) II with associated human papillomavirus infection: a comparison of preliminary results. - Bodner,K.; Bodner-Adler,B.; Wierrani,F.; Kubin,A.; Szolts-Szolts,J.; Spangler,B.; Grünberger,W. (Anticancer Res, 2003)