Supitcha Sumretphol และ Prathurng Hongsranagon. (2016) Knowledge and Attitude toward the Selection of Health Insurance Type after Retirement in Ratchaburi Province, Thailand. <i>Journal of Health Research</i>, <i>30</i>(Suppl.2), 99.Supitcha Sumretphol และ Prathurng Hongsranagon. "Knowledge and Attitude toward the Selection of Health Insurance Type after Retirement in Ratchaburi Province, Thailand". Journal of Health Research 30 (2016):99.Supitcha Sumretphol และ Prathurng Hongsranagon. Knowledge and Attitude toward the Selection of Health Insurance Type after Retirement in Ratchaburi Province, Thailand. Chulalongkorn University Press:ม.ป.ท. 2016.