Gelius, P. , , Messing, S. , , Abu-Omar, K. , , Marzi, I. , , Beck, F. , , Geidl, W. , , Grüne, E. , , Tcymbal, A. , , Reimers, A. K. , and Pfeifer, K. . "Collaborative Development of an Instrument to Monitor Physical Activity Promotion Based on Policy-Makers’ Needs – the TARGET:PA Tool", International Journal of Health Policy and Management, , , 2025, -.