Study	Reason for exclusion
Akatsuka 2018	Wrong population
Anonymous 2005	Comment on Curley 2005
Ayzac 2016	Adult population
Baston 2019	Wrong study design
Bourenne 2018	Literature review
Brzęk 2019	Wrong study design
Casado‐Flores 2002	Wrong study design
Curley 2000	Wrong study design
Dalmedico 2017	Literature review
Du 2018	Wrong study design
Gattinoni 2018	Literature review
Guervilly 2019	Literature review
Hassankhani 2017	Adult population
Jang 2020	Wrong population
Johnson 2017	Literature review
Kamo 2018	Wrong study design
Kavanagh 2005	Comment on Curley 2005
Lee 2018	Wrong study design
Leger 2017	Wrong study design
Li 2018	Wrong intervention
Li Bassi 2017	Adult population
Li Bassi 2017a	Adult population
Li Bassi 2017b	Wrong population
Li Bassi 2017c	Wrong population
Munshi 2017	Wrong study design
Murdoch 1994	Not randomised
Najafi 2017	Wrong population
Panigada 2017a	Wrong population
Panigada 2017b	Wrong population
Pelosi 2001	Adult population
Pourazar 2018	Neonatal population
Teng 2018	Systematic review
Thompson 2013	Adult population
Trikha 2013	Adult population
Yonis 2017	Wrong outcomes
Yue 2017	Systematic review