Application of the Boston Technical Performance Score to intraoperative echocardiography oleh Hannah R Bellsham-Revell, Antigoni Deri, Silvia Caroli, Andrew Durward, Owen I Miller, Sujeev Mathur, Jelena Saundankar, David R Anderson, B Conal Austin, Caner Salih, Kuberan Pushparajah, John M Simpson