[1] Istanbul Univ, Istanbul Med Sch, Dept Consultat Liaison Psychiat, TR-34080 Istanbul, Turkey
[2] Istanbul Univ, Cerrahpasa Med Sch, Dept Internal Med, Div Endocrinol & Metab, TR-34080 Istanbul, Turkey
[3] Istanbul Univ, Istanbul Med Sch, Dept Biostat, TR-34080 Istanbul, Turkey
[4] Istanbul Univ, Cerrahpasa Med Sch, Dept Neurosurg, TR-34080 Istanbul, Turkey