Authors’ roles
S.C.M., B.W.M., W.C.D., S.T., A.W.H. and L.H.R.W. contributed to the conception and design of the study. A.M.D. contributed to the design of the protocol and data collection tools and to the overall trial management. C.A.M. contributed to data processing. S.C.M. performed the analysis and drafted the manuscript. All authors reviewed and contributed to the final manuscript.