1. The Botallo mystery;Fransson;Clin Cardiol,1999
2. Leonardo da Vinci and patent foramen ovale: an historical perspective;Rigatelli;Int J Cardiol,2016
3. Leonardo da Vinci on the Human Body: The Anatomical, Physiological and Embryological Drawings (with his notes) of Leonardo da Vinci;Da Vinci,1952
4. Leonardo da Vinci’s studies of the heart;Shoja;Int J Cardiol,2013
5. Two cases of free communication between the auricles, by deficiency of the upper part of the septum auricularum;Waggstaffe;Trans Pathol Soc Lond,1868