National survey study on the approaches of pediatricians, family physicians, medical oncologists and gynecologists to the HPV vaccine oleh Ahmet Unlu, M. Dogukan Kalenderoglu, Hale Ay, Ceren Kabaoglu, Z. Lutfullah Koc, D. Ozel Erkan, Seyda Gunduz, Onder Kirca, Saadettin Kılıckap, Mustafa Ozdogan