[1] Weiss Mem Hosp, Chicago, IL USA
[2] Thomas Jefferson Univ Hosp, Philadelphia, PA 19107 USA
[3] Onslow Mem Hosp, Jacksonville, NC USA
[4] Univ Michigan, Ann Arbor, MI 48109 USA
[5] Mayo Clin, Phoenix, AZ USA
[6] Univ Toledo, Med Ctr, 2801 W Bancroft St, Toledo, OH 43606 USA
[7] Wayne State Univ, Detroit, MI USA
[8] Forest Gen Hosp, Hattiesburg, MS USA
[9] Thomas Jefferson Univ Hosp, Philadelphia, PA 19107 USA
[10] Baylor Coll Med, Michael E DeBakey VA Med Ctr, Houston, TX 77030 USA
[11] Detroit Med Ctr, Detroit, MI USA