Author contributions
M.G., K.F., F.K., I.D.M., E.T., E.H., H.S., F.C., S.L., M.M., Y.T., R.v.K., U.P., and A.H. were involved in the design of the study or contributed to the refinement of methods. A.H., I.D.M. and M.G. supervised the study. F.K. and K.F. coordinated the fieldwork. M.G. analyzed the data and drafted the initial manuscript. K.F., F.K., I.D.M., E.T., E.H., H.S., F.C., S.L., M.M., Y.T., R.v.K., U.P., and A.H. contributed to revising and editing the final manuscript. F.C. carried out the final language check. All authors read and approved the final manuscript.