Hacettepe University Faculty of Health Sciences Department of Child Development Sıhhiye Ankara-TURKIYE Tel : 00 90 312 305 15 26 00 90 312 305 18 37 - 00 90 312 305 31 26 Fax: 00 90 312 305 30 53 E-mail : hucg@hacettepe.edu.tr