Authors: H Calkins; Y N Kim; S Schmaltz; J Sousa; R el-Atassi; A Leon; A Kadish; J J Langberg; F Morady Journal: Circulation Date: 1992-02 Impact factor: 29.690
Authors: G Hindricks; H Kottkamp; X Chen; S Willems; W Haverkamp; M Shenasa; G Breithardt; M Borggrefe Journal: J Am Coll Cardiol Date: 1995-02 Impact factor: 24.094