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Gastric Point of Care Ultrasound in Adults: Image Acquisition and Interpretation
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[Importance of the "knocking" symptom in detecting peptic ulcer in flight personnel]

E A Fedorov, V D Vlasov

    Kosmicheskaia Biologiia I Aviakosmicheskaia Meditsina
    |September 1, 1977
    PubMed

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