[1] Henry Ford Hlth Syst, Detroit, MI 48202 USA
[2] Univ Penn, Philadelphia, PA USA
[3] Imperial Coll, Hammersmith Hosp, London, England
[4] Univ Calif San Diego, La Jolla, CA USA
[5] Univ Calif San Diego, Sulpizio Cardiovasc Ctr, San Diego, CA USA
[6] Natl Hosp Org Okayama Med Ctr, Okayama, Japan
[7] Univ Michigan, Ann Arbor, MI USA
[8] Temple Univ, Philadelphia, PA USA
[9] Massachusetts Gen Hosp, Boston, MA USA
[10] Ohio State Univ, Wexner Med Ctr, Columbus, OH USA