Serum 25-hydroxyvitamin D, vitamin B12, and folate concentrations in children with autism spectrum disorder: a case-control study from a tertiary care center in Turkiye
Aims: This study aimed to compare serum 25-hydroxyvitamin D [25(OH)D], vitamin B12, and folate concentrations between children with autism spectrum disorder (ASD) and typically developing controls, and to examine their relationship with autism symptom severity.Methods: This case-control study combined prospective clini...