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Changes in the structure-function relationship of elastin and its impact on the proximal pulmonary arterial mechanics of hypertensive calves. <i>Am J Physiol Heart Circ Physiol<\/i> 2008; 295: H1451\u2013H1459.","DOI":"10.1152\/ajpheart.00127.2008"},{"key":"8","doi-asserted-by":"crossref","unstructured":"9. Badagliacca R, Poscia R, Pezzuto B, Papa S, Nona A, Mancone M, et al. Pulmonary arterial dilatation in pulmonary hypertension: Prevalence and prognostic relevance. <i>Cardiology<\/i> 2012; 121: 76\u201382.","DOI":"10.1159\/000336172"},{"key":"9","doi-asserted-by":"crossref","unstructured":"10. Boerrigter B, Mauritz GJ, Marcus JT, Helderman F, Postmus PE, Westerhof N, et al. Progressive dilatation of the main pulmonary artery is a characteristic of pulmonary arterial hypertension and is not related to changes in pressure. <i>Chest<\/i> 2010; 138: 1395\u20131401.","DOI":"10.1378\/chest.10-0363"},{"key":"10","doi-asserted-by":"crossref","unstructured":"11. Devaraj A, Hansell DM. 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