Study	Reason for exclusion
Ahola Kohut 2016	Insufficient psychotherapeutic treatment
Armbrust 2015	Acceptance paper
Bonnert 2014	Open trial, no control group
Cottrell 2007	Did not deliver treatment via technology
Greenley 2015	Did not deliver treatment via technology
Kroner‐Herwig 2002	Did not deliver treatment via technology
Larsson 1987a	Did not deliver treatment via technology
Larsson 1987b	Did not deliver treatment via technology
Larsson 1990	Did not deliver treatment via technology
Levy 2017	Did not deliver treatment via technology
Long 2009	Usability evaluation of online treatment
McClellan 2009	N < 10 in at least 1 arm of the trial at post‐treatment
McGrath 1992	Did not deliver treatment via technology
Merlijn 2005	N < 10 in at least 1 arm of the trial at post‐treatment
Palermo 2018	N < 10 in at least 1 arm of the trial at post‐treatment
Trautmann 2008	N < 10 in at least 1 arm of the trial at post‐treatment
van Tilburg 2009	Did not deliver treatment via technology
Voerman 2015	Insufficient number of participants at post‐treatment