Zhou Long-xi

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Double ball=on 3 lumen silicon T tube is different from latex T tube and other modified T tubes. Under the observation, of self-comparison method, we have performed retrc.grade chclangiograms by using double bal l ,on 3 lumen silicon T tube at random b~th before and after inflation in 35 cases cf bi]iary disease from 1981 to 1983. The results cf observation(More)
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