“…In the sixth and final screening round, the full texts of the 43 studies included after the third screening round plus the 37 studies resulting from the citationbased search were closely examined and final inclusion decisions were made on the basis of all four inclusion criteria. In total, 12 studies were included in the qualitative synthesis (i.e., Abdoul et al, 2012, Guetzkow et al, 2004, Hartmann and Neidhardt, 1990, Lahtinen et al, 2005, Lamont, 2009, Pier et al, 2018, Pollitt et al, 1996, Reinhart, 2010, Schmitt et al, 2015, Thomas and Lawrence, 1991, van Arensbergen et al, 2014b, Whaley et al, 2006). Hartmann's and Neidhardt's (1990) joint article was included, but not their books (Hartmann, 1990, Neidhardt, 1988, as they contain the same criteria as the joint article.…”