Visuthipanich, V., Sirapo-ngam, Y., Malathum, P., Kijboonchoo, K., Vorapongsathorn, T. and Winters-Stone, K.M. 2013. Physical Activity Questionnaire Development and Testing among Elderly Community-Dwelling Thais. Pacific Rim International Journal of Nursing Research. 13, 4 (Feb. 2013), 249–267.