Apiyasawat Sirin, Wongpraparut Nattawut, Jacobson Laura, Berkowitz Henry, Jacobs Larry E, Kotler Morris N
Echocardiography Laboratory, Division of Cardiology, Department of Medicine, Albert Einstein Medical Center, 5401 Old York Road, Philadelphia, PA 19141, USA.
Echocardiography. 2003 Feb;20(2):199-200. doi: 10.1046/j.1540-8175.2003.03002.x.