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Non‐invasive measurements of the phrenic nerve conduction time (CT) and diaphragmatic electromyographic response to voluntary inspiratory efforts may help to document an abnormal diaphragmatic function in the presence of hemidiaphragm elevation on chest radiographs. Twenty‐one patients were addressed for the diagnosis of abnormal placement and motion of the right (13) or left (8) cupola on chest radiographs...
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