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Subjects
- Radiation Exposure -- adverse effects1
- Radiography3
- Radiography -- instrumentation1
- Radiography -- methods2
- Radius Fractures1
- Railroads2
- Range of Motion, Articular1
- Reconstructive Surgical Procedures1
- Rectal Diseases -- complications1
- Rectal Diseases -- diagnosis1
- Rectal Diseases -- surgery1
- Rectal Diseases -- therapy1
- Refraction, Ocular2
- Refractive Errors -- diagnosis1
- Refractive Errors -- therapy1
- Relief Work1
- Renal Insufficiency1
- Reproduction3
- Reptiles1
- Respiratory Sounds1