Author contributions
Conception and design of the study and 4 year follow-up: M.K., M.R., R.Z., A.B., C.G., B.B.; Development of the intervention program M.K., R.Z., C.G.; Collection and assembly of data: F.Q., D.P.; Data analysis and interpretation: M.R., M.K., F.Q., D.P., A.B., C.B., C.G. Manuscript writing or revising: M.K., M.R., D.P., R.Z., A.B., B.B., F.Q., C.G., C.B. All authors approved the final manuscript.