DR. V. MALARKODI, DR. M .MALATHI, and DR. A.R. SHIVASHANKARA, “ESTIMATED GLOMERULAR FILTRATION RATE AS AN EARLY MARKER OF RENAL FUNCTION IMPAIRMENT IN APPARENTLY HEALTHY INDIVIDUALS WITH NORMAL SERUM CREATININE LEVELS: A COMPARISON OF VARIOUS EQUATIONS”, ijpbs, vol. 4, no. 3, pp. 905–911, Sep. 2013.