Watcharapol Poonual และผู้แต่งคนอื่นๆ. (2016) Prevalence and Risk Factors of Hearing Impairment in Newborns Under Universal Hearing Screening Program in Northern Thailand. Rangsit University:ม.ป.ท.Watcharapol Poonual และผู้แต่งคนอื่นๆ. 2016. Prevalence and Risk Factors of Hearing Impairment in Newborns Under Universal Hearing Screening Program in Northern Thailand. ม.ป.ท.:Rangsit University;Watcharapol Poonual และผู้แต่งคนอื่นๆ. Prevalence and Risk Factors of Hearing Impairment in Newborns Under Universal Hearing Screening Program in Northern Thailand. ม.ป.ท.:Rangsit University, 2016. Print.