[1] Vitalant Res Inst, San Francisco, CA 94105 USA
[2] Univ Calif San Francisco, Sch Med, Dept Lab Med, 360 Spear St,Suite 200, San Francisco, CA 94105 USA
[3] TU Braunschweig, Peter L Reichertz Inst Med Informat, Hannover, Germany
[4] Hannover Med Sch, Hannover, Germany
[5] Univ Calif San Francisco, Benioff Childrens Hosp Oakland, Oakland, CA USA