Fratz, S;Meyrick, B;Ovadia, B;Johengen, MJ;Reinhartz, O;Azakie, A;Ross, G;Fitzgerald, R;Oishi, P;Hess, J;Black, SM;Fineman, JR.Chronic endothelin A receptor blockade in lambs with increased pulmonary blood flow and pressure..Am J Physiol Lung Cell Mol Physiol.2004.287.3.L592-7