× Gitelman’s syndrome complicated by mild renal insufficiency and high anion gap acidosis; a rare presentation in a young female

× A unique finding of normal aldosterone level in Bartter’s
syndrome

× Metformin protects renal tubular cells; mechanisms and new concepts  

× A case of Fanconi syndrome as a complication of treatment with a checkpoint inhibitor in a patient with hepatocellular carcinoma

× Administration of metformin in type 2 diabetes mellitus patients with chronic kidney disease; facts and myths