1. Department of Medicine, Lawson Health Research Institute, University of Western Ontario (A.B.H.), London, Ontario, Canada N6A 4V2
2. Department of Medicine, University of Calgary (D.A.H.), Calgary, Alberta, Canada T2N 4N1
3. Regional Osteoporosis Center of South Florida and Radiant Research (M.P.E.), Stuart, Florida 34996
4. Bethesda Health Research (M.A.B.), Bethesda, Maryland 20817
5. NPS Pharmaceuticals, Inc. (J.F., A.J.M.), Salt Lake City, Utah 84108
6. Regional Bone Center, Helen Hayes Hospital (R.L.), West Haverstraw, New York 10993