[1] Univ Pittsburgh, Med Ctr, Pittsburgh, PA USA
[2] Foch Hosp, Suresnes, France
[3] Mayo Clin, Jacksonville, FL USA
[4] Univ Texas San Antonio, San Antonio, TX USA
[5] Hop St Louis, Paris, France
[6] Johns Hopkins Univ, Baltimore, MD USA
[7] Univ Pittsburgh, Pittsburgh, PA USA