MORISHIGE, N.; HAYASHIDA, Y.; ITO, N.; TESHIMA, H.; TAKEUCHI, K.; IWAHASHI, H.; TASHIRO, T. Application of a New Suture Material Called the U-Clip for Composite and Sequential Grafting with Off-Pump Coronary Bypass Surgery. The Heart Surgery Forum, v. 9, n. 6, p. E861-E865, 9 Oct. 2006.