Pandis N.YU-KANG TUFleming P.S.Polychronopoulou A.2022-05-102022-05-1020140889-5406https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908363233&doi=10.1016%2fj.ajodo.2014.08.002&partnerID=40&md5=3269dead3b70a5faa7909d59f4e4258chttps://scholars.lib.ntu.edu.tw/handle/123456789/610281Randomized and nonrandomized studies: Complementary or competing?journal article10.1016/j.ajodo.2014.08.002254392142-s2.0-84908363233