Study Selection Ascertainment Causality Reporting
Chan (2003) √ √ X
Gonzalez Sandana (2012) √ √ X
Herbinger (2016) X √
Ishibashi (1987) X √ √
Massei (2001) √ √ X
Mazur (2019) √ √
Monteiro (2020) X √ √
Mygind (1976) X √ √
Rotenburg (1991) X X √
Sohn (2017) √ √
Son (2011) √ √ X
Sridhar (2018) √ √ X
#Vanderhorst (1991) X √ √
Zhang (2017) √ √
Gadeberg (1984) √ √
Dommerby (1986) √ √
Baehner (1967) √ √ X
Kanegane (1997) √ √ X
Henke (1973) √ √
Rosalki (1960) √ √
Shuster (1967) √ √
Kilpatrick (1966) √ √
Grotto (2003) √ √
Gao (2011) √ √ X
Rea (2001) √ √
Ginsburg (1977) √ √
Gelb (1962) X √ √
Finkel (1964) √ √
Wang (2013) √ √
Topp (2015) √ √ X
Baron (1965) √ √
Evans (1948) √ √ X
* Case-control study # Multicentre randomized controlled trial * Case-control study # Multicentre randomized controlled trial * Case-control study # Multicentre randomized controlled trial * Case-control study # Multicentre randomized controlled trial * Case-control study # Multicentre randomized controlled trial