“…The Delphi method is an iterative process to collect and analyze judgements of experts using multiple rounds of questionnaires (Hsu & Sandford, 2007;Skulmoski, Hartman & Krahn, 2007). Originally, the method was used in the American business community; it has since been used within different fields, including health care (Kangasniemi, Arala, Becker et al, 2017), policy-making (Adler & Ziglio, 1996), and education (Alexander, 2004). The Delphi-method has a flexible character, making it applicable for quantitative and qualitative research (Adler & Ziglio, 1996;Mason, 1996;Hsu & Sandford, 2007;Brady, 2015).…”