Table 2.

Quality Index of included studies

Author/Year	Quality Index
Cui Y/2013	16
Del Turco S/2008	16
Leong H S/2011	14
Matsumoto N/2004	16
Michelsen A E/2008	16
Min P K/2013	16
Morel O/2004	16
Morel O/2005	16
Skeppholm M/2012	16
Stepien E/2012	16
Tan K T/2005	16