Case report of an atrial septal defect with negative transthoracic echocardiography, a diagnostic challenge in a middle-aged female with marked dyspnoea

by Chathuri Liyanapathirana, Shashika Mihirani Arthanayake, Sisil Widyaratne, Saman Chandana, Danajani Senevirathne
Published 2021-04-01