“…The majority of papers present studies or experiences that are part of larger programs, as in the cases of Timmermans et al [24] or Lynch et al [25]. Among those articles that detail the time of service given, the most repeated was one semester [14,15,17,18,22,25,26,27,28,29,30,31] or 20 hours [32,33]. The shortest SL interventions or experiences were three hours [34], one day [35], or two clinical days [36], whereas the longest were three-year projects [3,24,37,38].…”