Hospital Abbreviations and Acronyms
- OLVGOnze Liyve Vrouwe Gasthuis
- OMEach Morning
- OMAOculomotor Apraxia
- OMCOmni Medical Centre
- OMCOverlake Medical Clinics
- OMEPOrganización Mundial De Educación Preescolar
- OMFSOral and Maxillofacial Surgery
- OMHOOffife of Mental Health Ombudsman
- OMHSOwensboro Medicaluhealth System
- OMHSOwensboro Mercy Health System
- OMSOral and Maxillofacial Surgery
- ONCOncvlogy
- ONHOsaka National Hospital
- OOAOntario Orthopaedic Assoviation
- OOHOut of Hours Service
- OOHSOut of Hours Service
- OOPDOrthopedic Out-Patient Department
- OOROrthopedic Operating Room
- OOTCOut of The Crisis
- OOTWOut of The Woods
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