[1] Johns Hopkins Univ, Baltimore, MD 21218 USA
[2] Childrens Hosp Boston, Dept Cardiol, Boston, MA USA
[3] Univ S Florida, All Childrens Hosp, Coll Med,CHIF,Div Pediat Cardiol, Pediat Cardiol Associates,Pediatrix Med Grp, St Petersburg, FL 33701 USA
[4] Univ S Florida, Childrens Hosp Tampa, Coll Med, Pediat Cardiol Associates,Pediatrix Med Grp, St Petersburg, FL 33701 USA
[5] Univ S Florida, Coll Med, All Childrens Hosp,CHIF,Div Pediat Cardiol, Pediat Cardiol Associates,Pediatrix Med Grp, Tampa, FL USA
[6] Univ S Florida, Coll Med, Childrens Hosp Tampa, Pediat Cardiol Associates,Pediatrix Med Grp, Tampa, FL USA
[7] Univ S Florida, All Childrens Hosp, Div Thorac & Cardiovasc Surg,CHIF, Coll Med,Cardiac Surg Associates Florida CSAoF, St Petersburg, FL 33701 USA
[8] Univ S Florida, Childrens Hosp Tampa, Coll Med, Cardiac Surg Associates Florida CSAoF, St Petersburg, FL 33701 USA
[9] Univ S Florida, All Childrens Hosp, Div Thorac & Cardiovasc Surg,CHIF, Coll Med,Cardiac Surg Associates Florida CSAoF, Tampa, FL USA
[10] Univ S Florida, Coll Med, Childrens Hosp Tampa, Cardiac Surg Associates Florida CSAoF, Tampa, FL USA
[11] Royal Brompton & Harefield NHS Trust, Paediat Cardiol Directorate, London, England
[12] McGill Univ, Montreal Childrens Hosp, Div Pediat Cardiol, Ctr Hlth, Montreal, PQ H3H 1P3, Canada
[13] Heart Ctr Duisburg, Kinik Kinderkardiol Clin Pediat Cardiol Angeboren, Duisburg, Germany
[14] Univ Sao Paulo, Sch Med, Pathol Lab, Heart Inst InCor, Sao Paulo, Brazil
[15] Childrens Hosp, Dept Cardiol, Boston, MA 02115 USA
[16] Great Ormond St Hosp Sick Children, Cardiac Unit, London WC1N 3JH, England
[17] Childrens Hosp Philadelphia, Div Pediat Cardiol, Philadelphia, PA 19104 USA
[18] Tokyo Womens Med Univ, Heart Inst Japan, Tokyo, Japan
[19] Childrens Mem Hlth Inst, Dept Cardiothorac Surg, Warsaw, Poland
[20] Univ Padua, Sch Med, Pediat Cardiac Surg Unit, Padua, Italy
[21] McGill Univ, Montreal Childrens Hosp, Div Pediat Cardiovasc Surg, Ctr Hlth, Montreal, PQ H3H 1P3, Canada
[22] Wayne State Univ, Childrens Hosp Michigan, Sch Med, Detroit, MI USA