VDR and urolithiasis: Relationship Between the <i>ApaI</i> (rs7975232), <i>BsmI</i> (rs1544410), <i>FokI</i> (rs2228570), and <i>TaqI</i> (rs731236) Variants in the Vitamin D Receptor Gene and Urolithiasis Susceptibility: An Updated Meta-Analysis and Trial Sequential Analysis.