1. Liver Diseases Branch; National Institute of Diabetes and Digestive and Kidney Diseases; Bethesda; MD; USA
2. Biostatistics, Intramural Research; National Institute of Diabetes and Digestive and Kidney Diseases; Bethesda; MD; USA
3. Skeletal Clinical Studies Unit, Craniofacial and Skeletal Diseases Branch; National Institute of Dental and Craniofacial Research; Bethesda; MD; USA
4. Pathology Branch; National Cancer Institute, National Institutes of Health; Bethesda; MD; USA