Clinical and Cost-Effectiveness of Personalized Tele-Based Coaching for Farmers, Foresters and Gardeners to Prevent Depression: Study Protocol of an 18-Month Follow-Up Pragmatic Randomized Controlled Trial (TEC-A) - Thielecke, Janika; Buntrock, Claudia; Titzler, Ingrid; Braun, Lina; Freund, Johanna; Berking, Matthias; Baumeister, Harald; Ebert, David D. (Friedrich-Alexander-Universität Erlangen-Nürnberg, 2020)