INTERNATIONAL JOURNAL OF DEVELOPMENTAL DISABILITIES, cilt.61, sa.4, ss.222-230, 2015 (SSCI)
Objective: In recent years, there has been an increasing interest in the effects of Vitamin D on cognitive development and autism. The aim of this study is to examine the relationship between autism, cognitive developmental delay and behavioral problems. We also aimed to examine the possible mechanisms of interaction between nerve growth factor (NGF) and glial cell line-derived neurotrophic factor (GDNF) levels.