Authors: G F Tyers; H C Hughes; G J Todd; D R Williams; E J Andrews; G A Prophet; J A Waldhausen Journal: J Thorac Cardiovasc Surg Date: 1974-03 Impact factor: 5.209
Authors: H J Bretschneider; G Hübner; D Knoll; B Lohr; H Nordbeck; P G Spieckermann Journal: J Cardiovasc Surg (Torino) Date: 1975 May-Jun Impact factor: 1.888