Authors’ contributions
RECRUITMENT
N.K. and R.S. (principal investigators of PrevOP-PAP) and N.L. (PrevOP-PAP study researcher): statistical analyses and first draft of the manuscript. J.K., A.D., and S.D.M.: (PrevOP-PAP study researchers): coordination of PrevOP-PAP. G.A. and H.B. (PrevOP-MMT study researchers): coordination of PrevOP-MMT. P.M. (principal trial statistician of PrevOP-PAP and PrevOP-MMT): randomization, power analyses PrevOP-MMT, support in statistical analyses. W.E. (principal investigator of PrevOP-MMT): recruitment of participants, inclusion, medical assessments. All authors contributed to the writing of this manuscript and approved the final version.