Studies Selection Ascertainment Causality Reporting
Banuchi 2014 √ √ X
Baugh 2013 √ X
Hathaway 2006 √ √ X
Kandasamy 2013 √ √ X
Kieff 2004 X √ √ X
Pang 2012 √ √ X
Rotenberg 2015 √ √ X
Spiegel 2005 √ √ X
Strocker 2008 √ √
Terris 1998 √ √ X