ASE/SCA Guidelines for performing a comprehensive intraoperative multiplane transesophageal echocardiography examination: recommendations of the American society of echocardiography council for intraoperative echocardiography and the society of cardiovascular anesthesiologists task force for certification in perioperative transesophageal echocardiography. - Shanewise,J.S.; Cheung,A.T.; Aronson,S, et al. (Anesth Analg, 1999)