[1] Vanderbilt Univ, Sch Med, Nashville, TN 37212 USA
[2] Sabadell Hosp, Sabadell, Spain
[3] Univ Minnesota, Minneapolis, MN USA
[4] Louis Mourier Hosp, Colombes, France
[5] Univ Gottingen, Gottingen, Germany
[6] Univ Hosp, Uppsala, Sweden
[7] Henri Mondor Hosp, Creteil, France
[8] Evangelismos Med Ctr, Athens, Greece
[9] Hosp Sta Creu & St Pau Hosp, Barcelona, Spain
[10] Latter Day Saints Hosp, Salt Lake City, UT USA
[11] Univ Milan, Monza, Italy
[12] Hosp Maggiore Borgo Trento, Verona, Italy
[13] Univ Hosp, Liege, Belgium
[14] Univ Utrecht, Utrecht, Netherlands
[15] Hop Cochin, Paris, France
[16] Virginia Commonwealth Univ Med Coll Virginia, Richmond, VA USA
[17] St Louis Univ, St Louis, MO 63103 USA
[18] Univ Cantonal Hosp, Geneva, Switzerland
[19] Hosp Clin Barcelona, Barcelona, Spain
[20] Univ Lausanne, Lausanne, Switzerland
[21] Univ Pittsburgh, Pittsburgh, PA USA
[22] Univ Hosp Luxembourg, Luxembourg, Luxembourg
[23] Hosp Candelaria, Santa Cruz De Tenerife, Spain
[24] Erasme Univ Hosp, Brussels, Belgium
[25] Univ Calif San Francisco, San Francisco, CA 94143 USA
[26] Univ Milan, Milan, Italy
[27] Univ Tennessee, Memphis, TN USA
[28] Univ Manitoba, Winnipeg, MB, Canada
[29] Harvard Med Sch, Childrens Hosp, Boston, MA 02115 USA
[30] St Josephs Hosp, Paris, France
[31] Univ Washington, Seattle, WA 98195 USA
[32] Univ Calif San Diego, San Diego, CA 92103 USA
[33] Guys Hosp, London, England
[34] NHLBI, NIH, Div Lung Dis, Bldg 10, Bethesda, MD 20892 USA
[35] Univ Hosp St Radboud, Nijmegen, Netherlands
[36] New Jersey Sch Med, Newark, NJ USA
[37] Univ Penn, Philadelphia, PA 19104 USA
[38] St Louis Hosp, Paris, France
[39] Burroughs Wellcome, Res Triangle Pk, NC USA