Stiffening of the human proximal pulmonary artery with increasing age oleh Edward P. Manning, Priti Mishall, Abhay B. Ramachandra, Abdulrahman H. M. Hassab, Jerome Lamy, Dana C. Peters, Terrence E. Murphy, Paul Heerdt, Inderjit Singh, Sherry Downie, Gaurav Choudhary, George Tellides, Jay D. Humphrey