“…The studies were mainly survey-based and used either longitudinal (Frith and Montgomery, 2006; Brull, 2015; Allen-Gilliam et al , 2016; Ong, 2017; Di Fiore et al , 2018; Weaver, 2018) or cross-sectional designs (Howell et al , 2001; Overcash et al , 2012; Rheingans, 2012; Wilson et al , 2014; Winslow et al , 2015; Gerard et al , 2016; Giambra et al , 2018). One study employed a modified Delphi technique, (Giambra et al , 2018) and four studies utilized mixed methods (Frith and Montgomery, 2006; Winslow et al , 2015; Ong, 2017; Giambra et al , 2018). The most widely used survey instrument was IPNG or its upgraded version (Howell et al , 2001; Overcash et al , 2012; Rheingans, 2012; Brull, 2015; Di Fiore et al , 2018; Weaver, 2018).…”