“…We classified twelve (44%) of the included studies as "feasibility studies" (Table 3); [5][6][7][8][9][10][11][12][13][14][15][16][17] nine (33%) as "clinical studies" (Table 5); [18][19][20][21][22][23][24][25][26] and six articles (22%) as "clinical education" studies (Table 7). 6,[27][28][29][30][31] Study design Nine (33%) of the included studies had a controlled design, with six (22%) having random assignment of participants to Skype or to a control, 10,12,13,19,21,25 with the remaining three studies (11%) having non-randomised assignment.…”