TY - JOUR AU - Nina, Vinícius T1 - Letter to the Editor JO - Braz J Cardiovasc Surg VL - 27 SP - 491 EP - 491 PY - 2012 SN - 11 M3 - doi 10.5935/1678-9741.20120084 UR - //www.bjcvs.org/article/2055