Wu, Wen-ChiChang, Hsing-YiYen, Lee-LanLee, Tony2015-06-302015-06-3020071471-2458http://dx.doi.org/10.1186/1471-2458-7-323http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/69921Changes in health risk behaviors of elementary school students in northern Taiwan from 2001 to 2003: results from the child and adolescent behaviors in long-term evolution studyBMC Public HealthJournal Article