Study (author and year) Country Design Setting NOS Follow-up Primary end point
Zhou et al. (2020) (18) China Observational Single center 4 In-hospital Death
Zhang et al. (2020) (19) China Observational Single center 5 In hospital Death
Takeda et al. (2020) (20) Japan Observational Multicenter 6 In-hospital Death
Jacobs et al. (2020) (21) USA Observational Multicenter 6 In-hospital Death
Yang et al. (2020) (22) China Observational Single center 7 In-hospital Death
Ruan et al. (2020) (23) China Observational Single center 7 In hospital Death
Li et al. (2020) (24) China Observational Single center 7 In-hospital Death
Guan et al. (2020) (25) China Observational Single center 7 In-hospital Death
Zeng et al (2020) (26) China Observational Single center 6 In-hospital Death
Beyls et al (2020) (27) France Observational Single center 6 4 weeks after discharge Death
Osho et al (2020) (28) USA Observational Single centre 6 In hospital Death
Haye et al (2020) (29) France Observational Single centre 6 In hospital Death