1. Mary Crowley Cancer Research Centers, Dallas, TX 75201.
2. MetroHealth Medical Center, Cleveland, OH 44109.
3. Gradalis, Inc., Dallas, TX 75201.
4. Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892.
5. Hospitalist Internists Associates, Dallas, TX 75251.
6. WLS Surgical Associates, Dallas, TX 75246.
7. Texas Oncology, Dallas, TX 75251.