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JCO

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JCO can refer to the leading medical journal Journal of Clinical Oncology, a Maltese village, the historic Jewish Combat Organization, the Indian military rank of Junior Commissioned Officer, or the American writer Joyce Carol Oates.

Medical

Journal of Clinical Oncology

Miscellaneous

Journal of Clinical Orthodontics

Community

Joyce Carol Oates (American author)

Governmental

Jewish Combat Organization
Junior Commissioned Officer (Indian rank)

Regional

Comino, Malta

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