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Yáñez Polo MA, Soriguer Escofet FC, Lissen Otero E, Causse Prado M, Perez Cano R, Melero Bellido M, Muñóz-González J.Yáñez Polo MA, et al. Among authors: perez cano r.Rev Clin Esp. 1972 Nov 15;127(3):765-70.Rev Clin Esp. 1972.PMID: 4346995Spanish.No abstract available.