[1] UNIV ZURICH, ORTHOPAD KLIN, FORCH STR 340, CH-8008 ZURICH, SWITZERLAND
[2] UNIV ZURICH, DEPT ORTHOPAED SURG, RES LAB CALCIUM METAB, CH-8008 ZURICH, SWITZERLAND
[3] UNIV ZURICH, DEPT MED, RES LAB CALCIUM METAB, CH-8008 ZURICH, SWITZERLAND
[4] CANTONAL HOSP, PAEDIAT CLIN, WINTERTHUR, SWITZERLAND
[5] UNIV ZURICH, DEPT PAEDIAT, CH-8008 ZURICH, SWITZERLAND