[1] Michigan Med, CS Mott Childrens Hosp, Sect Pediat Radiol, Dept Radiol, Room 3-231,1540 E Hosp Dr, Ann Arbor, MI 48109 USA
[2] Boston Childrens Hosp, Dept Radiol, Boston, MA USA
[3] Childrens Hosp Colorado, Dept Radiol, Aurora, CO USA
[4] UCSF Benioff Childrens Hosp Oakland, Dept Diagnost Imaging, Oakland, CA USA
[5] Texas Childrens Hosp, Edward Singleton Dept Radiol, Houston, TX 77030 USA
[6] Columbia Univ, Dept Radiol, New York, NY USA