Randomized clinical trial of non-antibiotic prophylaxis with d-Mannose plus Proanthocyanidins vs. Proanthocyanidins alone for urinary tract infections and asymptomatic bacteriuria in de novo kidney transplant recipients: The Manotras study Melissa Rau; Adrian Santelli; Sara Martí; María Isabel Díaz; Nuria Sabé; María Fiol; Luis Riera; Begoña Etcheverry; Sergi Codina; Ana Coloma; Anna Carreras-Salinas; Carmen Ardanuy; Josep M. Cruzado; Edoardo Melilli;