Tools for a personalized tacrolimus dose adjustment in the follow-up of renal transplant recipients. Metabolizing phenotype according to CYP3A genetic polymorphisms versus concentration-dose ratio Anna Vidal-Alabró; Helena Colom; Pere Fontova; Gema Cerezo; Edoardo Melilli; Nuria Montero; Ana Coloma; Anna Manonelles; Alex Favà; Josep M. Cruzado; Joan Torras; Josep M. Grinyó; Nuria Lloberas;