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Subjects
- Rabbits2
- Railroads2
- Reconstructive Surgical Procedures -- methods1
- Rectal Neoplasms -- surgery2
- Recurrence1
- Red Meat1
- Reference Values1
- Refraction, Ocular1
- Refractive Errors1
- Refractive Errors -- diagnosis1
- Refuse Disposal1
- Religion and Medicine1
- Reproduction1
- Reproductive Behavior -- physiology1
- Reproductive Physiological Phenomena1
- Research Support as Topic1
- Resorcinols -- therapeutic use1
- Respiration, Artificial1
- Respiration, Artificial -- instrumentation1
- Respiratory Therapy1