Kidney Transplantation; Urinary Tract Infections/etiology; Escherichia coli/isolation & purification; Female; Follow-Up Studies; Glomerulonephritis/diagnosis; Glomerulonephritis/epidemiology; Humans; Klebsiella/isolation & purification; Male; Polycystic Kidney Diseases/diagnosis; Polycystic Kidney Diseases/epidemiology; Proteus/isolation & purification; Pseudomonas/isolation & purification; Pyelonephritis/diagnosis; Pyelonephritis/epidemiology; Recurrence; Sex Factors; Staphylococcus/isolation & purification; Streptococcus/isolation & purification; Time Factors; Transplantation, Homologous; Urinary Tract Infections/diagnosis; Urinary Tract Infections/epidemiology; Urinary Tract Infections/microbiology; Urinary Tract Infections/urine