[1] East Tennessee Childrens Hosp, Knoxville, TN USA
[2] Univ Tennessee, Coll Med, Dept Med, Hlth Sci Ctr, Knoxville, TN USA
[3] Keck Sch Med, Dept Pediat, Los Angeles, CA USA
[4] Childrens Hosp Los Angeles, Div Nephrol, Los Angeles, CA USA
[5] Univ Texas Hlth Sci Ctr, Dept Pediat Pediat Nephrol & Hypertens, McGovern Med Sch, Houston, TX USA
[6] Univ Washington, Dept Pediat, Seattle, WA USA
[7] Seattle Childrens Hosp, Div Nephrol, Seattle, WA USA
[8] Wake Forest Sch Med, Dept Pediat, Sect Nephrol, Winston Salem, NC USA
[9] Brenner Childrens Hosp, Winston Salem, NC USA
[10] Wake Forest Sch Med, Dept Epidemiol & Prevent, Div Publ Hlth Sci, Winston Salem, NC USA
[11] Wake Forest Sch Med, Cardiovasc Sci Ctr, Winston Salem, NC USA
[12] Univ Washington, Pediat, 4800 Sand Point Way NE, M-S OC9 820, Seattle, WA 98105 USA
[13] Univ Washington, Pediat Nephrol, 4800 Sand Point Way NE, M-S OC9 820, Seattle, WA 98105 USA