“…Patient navigators were located mainly at a primary care or community level, 8,15–19,21–23,26,27,30–48,50,51,55–58,60,61,63,64 and communicated with participants through phone calls 8,15–25,27–34,36–39,41–48,50–56,58,59,61–64 . In some cases they met in person, 8,18,20,24,25,28,39,42,44–47,49–51,55,58,62 and/or sent lette rs, 22,24,25,50–52,56,61,62 e‐mails 20,23,56,59 or text messages 56,59 . Regarding the services they provided, 27 studies (61.4%) described them addressing health system barriers, as scheduling appointments, 18,20,23,30,32–34,39,40,42,44,47,50,53,56,58,61,62 sending reminders, 15,16,18–21,27,32,34,35,37–40,42,45,46,56,61–64 completing paperwork, 62 or communicating or supporting communication with providers …”