[1] Karolinska Institutet,Section of Oral Health and Periodontology, Division of Oral Diseases, Department of Dental Medicine
[2] Ege University,Department of Periodontology, Faculty of Dentistry
[3] Ege University,Department of Gynecology and Obstetrics, Faculty of Medicine
[4] Ege University,Department of Biostatistics and Medical Informatics, Faculty of Medicine