[1] Ann & Robert H Lurie Childrens Hosp, Pediat, Chicago, IL USA
[2] Northwestern Univ, Feinberg Sch Med, Chicago, IL USA
[3] Case Western Reserve Univ, UH Rainbow Babies & Childrens Hosp, Dept Pediat, Sch Med,Div Neonatol,Pediat, Cleveland, OH USA
[4] Univ Virginia, Sch Med, Ctr Adv Med Analyt, Charlottesville, VA USA
[5] Univ Virginia, Sch Med, Dept Internal Med, Div Cardiovasc Med, Charlottesville, VA USA
[6] Univ Miami, Miller Sch Med, Holtz Childrens Hosp, Jackson Mem Med Ctr,Div Neonatol,Pediat, Chicago, IL USA
[7] Univ Alabama Birmingham, Med Sch Birmingham, Div Neonatol, Pediat, Birmingham, AL USA
[8] Washington Univ, Sch Med, Pediat, St Louis, MO USA
[9] Univ Arkansas Hlth Sci, Pediat, Little Rock, AR USA
[10] Northwestern Univ, Feinberg Sch Med, Ann & Robert H Lurie Childrens Hosp Chicago, Div Neonatol, Chicago, IL USA
[11] Univ Virginia, Sch Med, Publ Hlth Sci, Charlottesville, VA USA
[12] Ann & Robert H Lurie Childrens Hosp Chicago, Div Pediat Auton Med, Chicago, IL USA
[13] Univ Texas Tyler, Elect Engn, Tyler, TX USA
[14] Brown Univ, Warren Alpert Sch Med, Hasbro Childrens Hosp, Pediat, Providence, RI USA
[15] Univ Virginia, Div Cardiovasc Med, Dept Internal Med, Ctr Adv Med Analyt,Publ Hlth Sci, Charlottesville, VA USA