P. Marcelino, N. Germano, S. Marum, A. P. Fernandes, P. Ribeiro, and M. G. Lopes, “Haemodynamic parameters obtained by transthoracic echocardiography and Swan-Ganz catheter: a comparative study in liver transplant patients”., Acta Med Port, vol. 19, no. 3, pp. 197–205, Sep. 2006.