K. Khampitak, J. Sothronwit, N. Eamudomkarn, and P. Chatvised, “Health Problems of Urban Middle-age and Elderly Males in Northeast Thailand: A Study of Patients Visiting the Andropause Clinic, Srinagarind Hospital, Khon Kaen University”, SRIMEDJ, vol. 31, no. 5, pp. 276–281, Nov. 2016.