| PRD | partial reaction of degeneration; physician relations department; postradiation dysplasia |
|---|---|
| RD | radial deviation; radiology department; rate difference; Raynaud disease; reaction of degeneration; ... |
| SHHD | Scottish Home and Health Department |
| USDA | United States Department of Agriculture |
| USDHEW | United States Department of Health, Education, and Welfare |