tokens: Elevated total serum calcium to a level of 11 . 9 + / - 0 . 2 mg / dl ( p less than 0 . 001 compared to control group ) developed in the gentamicin / 1 , 25 ( OH ) 2 vitamin D3 group on day 4 , 2 days prior to pronounced structural damage , and continued to be elevated through day 7 .