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Villaseñor A, Parra A, López Amor E, Rull JA, Lozano-Castañeda O.Villaseñor A, et al. Among authors: parra a.Rev Invest Clin. 1967 Apr-Jun;19(2):149-57.Rev Invest Clin. 1967.PMID: 5317602Spanish.No abstract available.
Arriaga L, Parra A, Rull JA.Arriaga L, et al. Among authors: parra a.Rev Invest Clin. 1972 Jan-Mar;24(1):7-33.Rev Invest Clin. 1972.PMID: 5032343Spanish.No abstract available.
Rivero A, Clavijo E, Santos J, Parra A.Rivero A, et al. Among authors: parra a.Med Clin (Barc). 1997 Oct 4;109(11):437-8.Med Clin (Barc). 1997.PMID: 9379737Spanish.No abstract available.
Velasco F, Velasco M, Rodríguez-Martínez HA, Muñoz H, Cervantes C, Parra A.Velasco F, et al. Among authors: parra a.Rev Invest Clin. 1981 Jul-Sep;33(3):285-8.Rev Invest Clin. 1981.PMID: 7330500No abstract available.
Espinosa de los Monteros A, Ayala J, Sanabria LC, Parra A.Espinosa de los Monteros A, et al. Among authors: parra a.Rev Invest Clin. 1995 Sep-Oct;47(5):347-53.Rev Invest Clin. 1995.PMID: 8584804
Parra A, Velasco M, Cervantes C, Muñoz H, Cerbón MA, Velasco F.Parra A, et al.Neuroendocrinology. 1980 Jul;31(1):60-5. doi: 10.1159/000123051.Neuroendocrinology. 1980.PMID: 6771666