Table 1.

Period of data collection and dates of the two training weeks per project site

	Zagreb, Croatia	Kotor, Montenegro	Siret, Romania	Skopje, North Macedonia	Sofia, Bulgaria
Period of Recruitment	May 2018 – September 2018	1. – 15. October 2018	January 2018 and March 2018	20. – 31. May 2019	April 2019 – June 2019
Training Week 1 (on-site-training)	24. – 28. September 2018	4. – 8. November 2018	28. January – 02. February 2019	24. – 28. June 2019	15. – 19. July 2019
Data collection	February 2019	February 2019	April 2019	June 2019	November 2019
Training Week 2 (Netherlands)	6. – 10. May 2019	6. – 10. May 2019	6. – 10. May 2019	02. – 06. December 2019	02. – 06. December 2019