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930137 Effects of selective and non-selectiveβ-adrenoreceptor blockers on portal hemody-namics in patients with liver cirrhosis.HUANGTianwei(黄天卫),et al.1st Affili Hosp,DalianMed Coll.Chin J Digest 1992;12(3):145-147.Effects of selective(atenolol)and non-s