“…In addition, those types of narrative literature review also carry some degrees of limitation especially those involving longitudinal cases conducted over a long period of time. Consequently, caution should be applied when interpreting the results, except for a few exceptions (Blanco-Mesa, Merigo, & Gil-Lafuente, 2017;Bragge, Korhonen, Wallenius, & Wallenius, 2010;Qaiser, Ahmed, Sykora, Choudary, & Simpson, 2017;Yu, Wang, Zhang, & Zhang, 2018). Thus far, existing studies have not been able to indicate with details, how research on SD had evolved over the years, which this study aims to address.…”