%0 Journal Article %T Accessory Mitral Valve Tissue: An Unusual Echocardiographic Finding %J Archive of "CASE : Cardiovascular Imaging Case Reports". %D 2018 %R 10.1016/j.case.2017.09.004 %K Accessory mitral valve tissue %K Echocardiography %K Mitral valve %K Congenital heart disease %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6058923/