1. From the University of Alabama at Birmingham (J.N.B., D.H., S.S., P.M.)
2. Duke University, Durham, NC (Y.Y.)
3. Tulane University, New Orleans, LA (P.K.W.)
4. Case Western Reserve University and University Hospitals Cleveland Medical Center, OH (J.T.W.)
5. Columbia University, New York, NY (D.S.).