Table 2.

Epidemiology of the studies included in the paper.

Reference	Country	Year of publication	Study type	Period of study	Size of cohort
Akhtar et al. (18)	Pakistan	2018	Cohort	2012–2016	80
Al-Hourani et al. (32)	UK	2019	Cohort	2014–2018	113
Bali et al. (19)	India	2011	RCT	2006–2009	54
Bonatus et al. (20)	USA	1997	Cohort	1989–1993	72
Court-Brown et al. (21)	Scotland	1992	Cohort	1986–1991	110
Duyos et al. (6)	USA	2017	Cohort	1993–2012	151
Gaebler et al. (22)	Austria & Germany	2001	Cohort	1988–1997	202
Haonga et al. (33)	Tanzania	2019	RCT	2015–2017	111
Henley et al. (23)	USA	1998	Cohort	1988–1993	104
Howard et al. (24)	USA	1992	Cohort	1979–1988	61
Jenny et al. (25)	France	1994	Cohort	1974–1999	249
Kakar & Tornetta (26)	USA	2007	Cohort	1992–1997	143
Keating et al. (27)	Scotland & Canada	1997	Cohort	1987–1993	112
Singh et al. (28)	India	2011	Cohort	2002–2008	88
Tabatabaei et al. (29)	Iran	2012	Cohort	2008–2010	119
Whittle et al. (30)	USA	1992	Cohort	1986–1989	50
Wiss (31)	USA	1986	Cohort	1980–1984	56