[1] Kilimanjaro Christian Med Ctr, Dept Paediat & Child Hlth, POB 3010, Moshi, Tanzania
[2] Kilimanjaro Christian Med Ctr, Dept Radiol, Moshi, Tanzania
[3] Kilimanjaro Christian Med Ctr, Dept Orthopaed Surg, Moshi, Tanzania
[4] Leiden Univ, Dept Human Genet, Med Ctr, Leiden, Netherlands
[5] Clin Special Children, Strasburg, PA USA
[6] Radboud Univ Nijmegen, Med Ctr, Dept Human Genet, Nijmegen, Netherlands