“…Brief descriptions of CSER studies are provided in tables 1. Arvidsson, 2010;Cummings, 2008;Fukukawa, et al, 2007;Michael, Echols and Bukowski, 2010;Petts, Herd & O'Heocha, 1998;Shafer, 2006;Stanaland, Lwin and Murphy, 2011;Yakovleva and Vazquez-Brust, 2012 Liangrong and Song, (2008). Rahaman, 2000;Rahaman, Teoh and Thong, (1984) ;Tian, Wang and Yang, (2011).…”