GPT and macrophage activation syndrome: VL: Visceral leishmaniasis; MAS: Macrophage activation syndrome; NS: Nephrotic syndrome; TP: Total protein; GPT: Serum glutamic pyruvic transaminase; GOT: Serum glutamic oxaloacetic transaminase; LDH: Lactate dehydrogenase; GFR: Glomerular filtration rate; Uprot/Ucr: Urine protein-to-creatinine ratio; ND: Not done