[1] Johns Hopkins Univ, Sch Med, Johns Hopkins Hosp, NCI,Pediat Oncol Branch,NIH, Baltimore, MD USA
[2] Univ Miami, Holtz Childrens Hosp, Jackson Mem Hosp, Miami, FL USA
[3] Univ Miami, Holtz Childrens Hosp, Jackson Mem Hosp, Pediat Pulmonol, Miami, FL USA
[4] Univ Miami, Holtz Childrens Hosp, Jackson Mem Hosp, Pediat, Miami, FL USA
[5] Harvard Med Sch, Pediat Cardiol, Boston Childrens Hosp, Boston, MA USA
[6] Univ Miami, Jackson Mem Hosp, Miami, FL USA
[7] Jackson Mem Hosp, Holtz Childrens Hosp, Pediat Emergency Dept, Miami, FL USA