[1] Thomas Jefferson Univ, Sidney Kimmel Med Coll, Pediat, Philadelphia, PA 19107 USA
[2] Alfred I duPont Hosp Children, Nemours Cardiac Ctr, 1600 Rockland Rd, Wilmington, DE 19803 USA
[3] Johns Hopkins Med Int, Baltimore, MD USA
[4] Univ Michigan, Sch Med, Pediat, Ann Arbor, MI USA
[5] Univ Michigan, CS Mott Childrens Hosp, Ann Arbor, MI 48109 USA
[6] Childrens Hosp Philadelphia, Cardiac Nursing, Philadelphia, PA 19104 USA
[7] Univ Penn, Sch Nursing, Pediat Nursing, Philadelphia, PA 19104 USA
[8] Harvard Univ, Sch Med, Pediat & Psychiat, Boston, MA USA
[9] Boston Childrens Hosp, Div Dev Med, Boston, MA USA
[10] Univ Missouri, Sch Med, Pediat, Kansas City, MO 64108 USA
[11] Childrens Mercy, Div Dev & Behav Sci, Kansas City, MO USA
[12] Harvard Univ, Sch Med, Psychiat, Boston, MA USA
[13] Boston Childrens Hosp, Dept Psychiat, Boston, MA USA