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Subjects
- Rectal Diseases -- surgery1
- Rectal Fistula -- surgery1
- Rectum -- surgery1
- Red Cross -- history1
- Reflex, Abnormal1
- Refraction, Ocular1
- Refractive Errors2
- Refractive Errors -- diagnosis1
- Refuse Disposal1
- Reproduction1
- Reptiles1
- Respiratory System1
- Respiratory Tract Diseases -- drug therapy1
- Restraint, Physical1
- Resuscitation1
- Retinitis1
- Rheumatic Diseases1
- Rhinitis -- drug therapy1
- Rhinitis -- therapy1
- Rhinitis, Allergic, Seasonal -- pathology1