Ishikawa, N., Sun, Y. S., Nifong, L. W., Watanabe, G., & Chitwood, W. R. (2007). How I Do It: Self-Retaining Atrial Retractors for Robotic and Minimally Invasive Mitral Valve Surgery. The Heart Surgery Forum, 10(3), E217-E218. https://doi.org/10.1532/HSF98.20071012