1. The Mount Sinai Hospital School of Medicine, 100 Street and Fifth Avenue, New York, N.Y. 10029 (CA-04457).
2. Johns Hopkins Hospital, Baltimore, Md. (CA-06973).
3. Associate Biostatistician, Roswell Park Memorial Institute, Buffalo, N.Y. (CA-02593).
4. Rhode Island Hospital, Providence, R.I. (CA-08025).
5. Albany Medical College of Union University, Albany, N.Y. (CA-06594).
6. West Virginia University Medical Center, Morgantown, W.Va. (CA-07757).
7. McGill University Hospitals, Montreal, Canada.
8. Maimonides Hospital, Brooklyn, N.Y. (CA-05588).
9. Bowman Gray School of Medicine, Winston-Salem, N.C. (CA-03927).