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Foker JE, Braunlin EA, St Cyr JA, Hunter D, Molina JE, Moller JH, Ring WS.Foker JE, et al. Among authors: ring ws.J Thorac Cardiovasc Surg. 1986 Oct;92(4):706-15.J Thorac Cardiovasc Surg. 1986.PMID: 3762200
Krabill KA, Ring WS, Foker JE, Braunlin EA, Einzig S, Berry JM, Bass JL.Krabill KA, et al. Among authors: ring ws.Am J Cardiol. 1987 Aug 1;60(4):351-4. doi: 10.1016/0002-9149(87)90241-4.Am J Cardiol. 1987.PMID: 3618495
Foker JE, Ring WS, Varco RL.Foker JE, et al. Among authors: ring ws.J Thorac Cardiovasc Surg. 1982 Jun;83(6):928-33.J Thorac Cardiovasc Surg. 1982.PMID: 7087522No abstract available.