Ferreira-Gonzalez I, Pinar-Sopena J, Ribera A, Marsal JR, Cascant P, Gonzalez-Alujas T, Evangelista A, Brotons C, Moral I, Permanyer-Miralda G, Garcia-Dorado D, Tornos P. Prevalence of calcific aortic valve disease in the elderly and associated risk factors: a population-based study in a Mediterranean area. Eur J Prev Cardiol. 2013 Dec;20(6):1022-30. doi: 10.1177/2047487312451238