Inserting a Sengstaken-Blakemore (S-B) tube.

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@article{Chhina1993InsertingAS, title={Inserting a Sengstaken-Blakemore (S-B) tube.}, author={Rajoo Singh Chhina and Lakhmir S. Chawla}, journal={Tropical doctor}, year={1993}, volume={23 2}, pages={90} }