1. Harrison T.R (2000). Harrison’s principes of internal medecine. McGraw-Hill, USA, 14th edition, pp 1627-30.
2. Blétry O, Girzyn N (2009). Du symtôme à la prescription en médecine générale. Elsevier Masson SAS, France, pp 39 – 47.
3. Simonneau G et al. (2013). Updated clinical classification of pulmonary hypertension. J Am Coll Cardiol. 62(25 Suppl):D34-41.