The figure depicts the exclusion criteria and the number of participants affected by each (if not already excluded for a preceding reason).

Participant flow. The figure shows that the main data source of the 192 partners used in the current study were the 120 partners who took part in the Stern study as well as in the follow-up four years later. The included study subjects are marked in grey. No information on the drop-out due to starting but not finishing the T1 surveys could be found.