Apiwan Chareonwat. (2024) Prevalence and Factors Associated with Insomnia in Elderly over 60 Years of Age at Family Medicine Outpatient Department Rajavithi Hospital. <i>Journal of the Department of Medical Services</i>, <i>49</i>(1), 80-88.Apiwan Chareonwat. "Prevalence and Factors Associated with Insomnia in Elderly over 60 Years of Age at Family Medicine Outpatient Department Rajavithi Hospital". Journal of the Department of Medical Services 49 (2024):80-88.Apiwan Chareonwat. Prevalence and Factors Associated with Insomnia in Elderly over 60 Years of Age at Family Medicine Outpatient Department Rajavithi Hospital. Department of Medical Services:ม.ป.ท. 2024.