“…For the method of ascertaining ASD, four studies used parental reports 26,29,30,36 , and the other studies based on their diagnoses on the Diagnostic and Statistical Manual (DSM-IV) 31,32,34 , DSM-V 9,28,32 , Social Communication Questionnaire (SCQ) 24 , International Classification of Diseases, 9th Revision (ICD-9) 25 , International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) 27,35 , Autism Diagnostic Interview-Revised (ADI-R) 24,33,37 , Autism Diagnostic Observation Schedule (ADOS) 24,34 , and Autism Diagnostic Observation Schedule-Generic (ADOS-G) 33 . For the method of ascertaining BMI, three studies included parentally reported data 26,30,36 , ten studies objectively measured the data 9,24,27–29,31–34,37 , and two studies extracted the information from the participants’ medical records 25,35 .…”