Onsiri Pitisuttithum และ Peerasak Chantaraprateep. (2017) Prevalence of healthy aging and factors associated in Thai urban elderly Bangkok Thailand. Chulalongkorn University:ม.ป.ท.Onsiri Pitisuttithum และ Peerasak Chantaraprateep. 2017. Prevalence of healthy aging and factors associated in Thai urban elderly Bangkok Thailand. ม.ป.ท.:Chulalongkorn University;Onsiri Pitisuttithum และ Peerasak Chantaraprateep. Prevalence of healthy aging and factors associated in Thai urban elderly Bangkok Thailand. ม.ป.ท.:Chulalongkorn University, 2017. Print.