[1] CASE WESTERN RESERVE UNIV, CLEVELAND, OH 44106 USA
[2] PENN STATE UNIV, MILTON S HERSHEY MED CTR, COLL MED, HERSHEY, PA 17033 USA
[3] WORCESTER MEM HOSP, DEPT MED, WORCESTER, MA USA
[4] WORCESTER MEM HOSP, NEW ENGLAND AREA COMPREHENS HEMOPHILIA CTR, WORCESTER, MA USA
[5] UNIV MASSACHUSETTS, SCH MED, WORCESTER, MA 01605 USA
[6] UNIV SO CALIF, HOSP ORTHOPAED, LOS ANGELES, CA 90089 USA
[7] UNIV SO CALIF, DEPT MED, LOS ANGELES, CA 90089 USA