First Author	Year	Study Location	Study Design	Level of Evidence	Length of Follow-up, mo	MINORS Score (Out of 16)
Bokor3	1999	Australia	Retrospective case review	4	Not reported	9
Smith30	2014	USA	Case series	4	Not reported	7
Chang7	2014	USA	Case series	4	4-60	5
Taljanovic32	2011	USA	Case series	4	24-60	10
Provencher22	2014	USA	Case series	4	24-68	11
Bhatia1	2013	India	Case series	4	20	11
Huberty12	2006	USA	Case series	4	31.8	10
Kon13	2005	Japan	Case series	4	12-24	10
Chhabra8	2004	USA	Case report	5	9	8
Schippinger26	2001	Austria	Case report	5	12	6
Shah27	2010	USA	Case report	5	36	7
Gehrmann10	2003	USA	Case report	5	13	7
Rhee23	2007	South Korea	Case series	4	20-52	10
Wolf34	1995	USA	Case series	4	26-54	8
Oberlander20	1996	USA	Case series	4	24-36	8
Rothberg25	2009	USA	Case series	4	12	9
Warner33	1997	USA	Case report	5	26	8
Castagna6	2007	USA	Case series	4	28-39	11

^aMINORS, methodological index for nonrandomized studies.