This is the initial experience with a new minimally invasive surgical technique for the treatment of mitral valve disease using a PortAccess system.
Gulielmos, V. (1998). Minimally invasive mitral valve surgery – clinical experiences with a PortAccess system. European Journal of Cardio-Thoracic Surgery, 14, 148–153. https://doi.org/10.1016/s1010-7940(98)00124-9