1. Departments of Medicine (M.D.W., D.J.M., I.B., S.J.S.), Columbia University College of Physicians and Surgeons, New York, New York 10032
2. Surgery (W.B.I.), Columbia University College of Physicians and Surgeons, New York, New York 10032
3. Neurology (R.M.L.), Columbia University College of Physicians and Surgeons, New York, New York 10032
4. Helen Hayes Hospital (S.V., F.C.), Regional Bone Center, West Haverstraw, New York 10993