Table 1. General characteristics of the included studies.

Authors	Country	Language	Design	Number of cases	Study quality
Yao et al. [49]	China	Chinese	Case report	3	Excellent
Barton et al. [24]	USA	English	Case report	2	Good
Xu et al. [25]	China	English	Case report	1	Good
Tian et al. [27]	China	English	Case series	4	Good
Tian et al. [26]	China	English	Case report	2	Good
Su et al. [28]	China	English	Cross-sectional study	26	Good
Carsana et al. [13]	Italy	English	Cross-sectional study	38	Good
Schaller et al. [20]	Germany	English	Cross-sectional study	10	Fair
Menter et al. [50]	Switzerland	English	Cross-sectional study	21	Excellent
Edler et al. [51]	Germany	English	Cross-sectional study	12	Excellent
Remmelink et al. [52]	Belgium	English	Cross-sectional study	17	Excellent
Buja et al. [29]	USA	English	Case series	3	Good
Bradley et al. [30]	USA	English	Case series	14	Good
Lax et al. [53]	Austria	English	Cross-sectional study	11	Excellent
Wichmann et al. [31]	Germany	English	Cohort study	12	Good
Rapkiewicz et al. [21]	USA	English	Case series	7	Fair
Martines et al. [32]	USA	English	Case series	8	Good
Magro et al. [54]	USA	English	Case series	5	Excellent
Fox et al. [33]	USA	English	Case series	10	Good
Bryce et al. [55]	USA	English	Case series	25	Excellent
Prilutskiy et al. [34]	USA	English	Case series	4	Good
Konopka et al. [22]	USA	English	Case report	1	Fair
Fitzek et al. [56]	Germany	English	Case report	1	Excellent
Zhang et al. [35]	China	English	Case report	1	Good
Li et al. [36]	USA	English	Case report	1	Good
Cipolloni et al. [37]	Italy	English	Case report	2	Good
Adachi et al. [57]	Japan	English	Case report	1	Excellent
Flikweert et al. [58]	Netherlands	English	Case series	7	Excellent
Grillo et al. [38]	Italy	English	Case series	8	Good
Xu et al. [39]	China	Chinese	Case series	10	Good
Wu et al. [40]	China	Chinese	Case series	10	Good
Youd et al. [41]	UK	English	Case series	9	Good
Konopka et al. [23]	USA	English	Case series	8	Fair
Schaefer et al. [60]	USA	English	Case series	7	Excellent
Ackermann et al. [59]	USA	English	Case series	7	Excellent
Bösmüller et al. [61]	Germany	English	Case series	4	Excellent
Suess et al. [42]	Switzerland	English	Case report	1	Good
Sonzogni et al. [62]	Italy	English	Cross-sectional study	48	Excellent
Wang et al. [63]	China	English	Cross-sectional study	2	Excellent
Bruni et al. [43]	Italy	English	Case report	1	Good
Colmenero et al. [44]	Spain	English	Case series	7	Good
Beigmohammadi et al. [45]	Iran	English	Case series	7	Good
Heinrich et al. [46]	Germany	English	Case report	1	Good
Wang et al. [47]	China	English	Case report	2	Good
Ducloyer et al. [64]	France	English	Case report	1	Excellent
Kantonen et al. [65]	Finland	English	Case series	3	Excellent
Reichard et al. [48]	USA	English	Case report	1	Good
Cîrstea et al. [66]	Romania	English	Case report	1	Excellent
Schwensen et al. [67]	Denmark	English	Case report	1	Excellent
Santoriello et al. [68]	USA	English	Cross-sectional study	42	Excellent