Etiology and Morphogenesis of Congenital Heart Disease Ralston M. Barnes, Brian L. Black. Nodal Signaling and Congenital Heart Defects. Etiology and Morphogenesis of Congenital Heart Disease. 2016 Jan 1; 183-192. 2016 https://researcherprofiles.org/profile/79297199 Ralston M. Barnes, Brian L. Black