1. From the Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands (Q.d.M., A.J.v.d.V., P.G.d.G.); Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (J.E.M., P.G.d.G., R.T.U.); North Tyneside General Hospital, North Shields (W.K.G., R.W.W.); Kilimanjaro Christian Medical Centre, Moshi, Tanzania (A.J.); Muhimbili University College Hospital, Dar-es-Salaam, Tanzania (F.M.); and Institute of Health and Society,...