Urgent or Emergent Coronary Revascularization Using Bilateral Internal Thoracic Artery after Previous Clopidogrel Antiplatelet Therapy - Gansera, B; Schmidtler, F; Spiliopoulos, K; Angelis, I; Neumaier-Prauser, P; Kemkes, B M (The Thoracic and Cardiovascular Surgeon, 2003)