Vorasettakarnkij, Y. “Transthoracic Echocardiography in Critically Ill Patients: Can We Use a New Parameter for Diagnosis of RV Dysfunction?”. Clinical Critical Care, vol. 18, no. 3, Sept. 2010, p. 5, https://he02.tci-thaijo.org/index.php/ccc/article/view/253593.