[1] Univ Zurich Hosp, Div Pulm Med & Lung Transplantat, CH-8091 Zurich, Switzerland
[2] Cleveland Clin, Childrens Hosp, Cleveland, OH 44106 USA
[3] Columbus Childrens Hosp, Columbus, OH USA
[4] Great Ormond St Hosp Sick Children, London WC1N 3JH, England
[5] Univ Childrens Hosp, Charite, Berlin, Germany
[6] Childrens Hosp, Boston, MA 02115 USA
[7] Stanford Univ, Lucile Packard Childrens Hosp, Palo Alto, CA 94304 USA
[8] Univ Childrens Hosp, Vienna, Austria
[9] Texas Childrens Hosp, Houston, TX 77030 USA
[10] Childrens Hosp Philadelphia, Philadelphia, PA 19104 USA
[11] Childrens Hosp Pittsburgh, Pittsburgh, PA 15213 USA
[12] Johns Hopkins Med Inst, Baltimore, MD 21205 USA
[13] Childrens Hosp, Med Sch Hanover, Hannover, Germany
[14] Childrens Hosp Wisconsin, Milwaukee, WI 53201 USA
[15] St Louis Childrens Hosp, St Louis, MO 63178 USA
[16] Hosp Sick Children, Toronto, ON M5G 1X8, Canada