“…A minority of seven studies
[51,57,76,77,82,83] applied inclusion criteria to target a specific group with psychosocial problems such as depression and anxiety symptoms. Half of the studies, 19 in total, recruited the subjects (not necessarily students) through university
[29,32,34,51,56,58-61,64-68,70,72,75,80,85]. In seven studies subjects were recruited in the community
[33,57,71,73,76,77,81], in four studies by referral from a practitioner or hospital
[29,51,82,83], in three studies in an organization
[62,78,79] and six studies recruited through the internet
[30,52-55,63,69,74,84].…”