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Flow diagram of included patients. ASO, arterial switch operation; IUD, intra‐uterine death; IVS, intact inter‐ventricular septum; TBA, Taussig‐Bing anatomy; TGA, transposition of the great arteries; TOP, termination of pregnancy; VSD, ventricular septal defect [Colour figure can be viewed at http://wileyonlinelibrary.com]
