Table 1.

Study demographics (R: retrospective, P: prospective, M: male, F: female, and # = number of patients).

Authors	Year	Country	Study	#	Sex
Elander et al. [18]	2022	USA	R	193	102 F, 91 M
Van Kempen et al. [19]	2022	Netherlands	R	62	40 F, 22 M
Sakata et al. [20]	2022	Japan	R	27	11 F, 4 M
Xia et al. [21]	2016	China	R	100	60 F, 40 M
Liu et al. [22]	2014	China	P	73	27 F, 25 M
Scarpelli et al. [23]	2012	Italy	R	60	27 F,33 M
Nesbitt et al. [24]	2012	UK	P	129	79 F, 50 M
Scaglia et al. [25]	2006	USA/Canada	R	115	26 F, 19 M
	2006–2022			759	F:M = 1:1.3