Pensri Lausawatchaikul. (1999) Related factors and outcome of falls in the elderly. Mahidol University,:ม.ป.ท.Pensri Lausawatchaikul. 1999. Related factors and outcome of falls in the elderly. ม.ป.ท.:Mahidol University,;Pensri Lausawatchaikul. Related factors and outcome of falls in the elderly. ม.ป.ท.:Mahidol University, 1999. Print.