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Figure 1: (a and b) Parasternal short-axis view showing collateral from the right coronary artery and left coronary artery inserting into the main pulmonary artery. Left anterior descending artery and left circumflex artery seen arising from the left coronary artery after the collateral

Figure 1: (a and b) Parasternal short-axis view showing collateral from the right coronary artery and left coronary artery inserting into the main pulmonary artery. Left anterior descending artery and left circumflex artery seen arising from the left coronary artery after the collateral