@article{article3446c631,
title   = {A background subtraction approach for determination of endogenous cortisol and 6β-hydroxycortisol in urine by UPLC-MS/MS with application in a within-day variability study in HIV-infected pregnant women},
author = {Benzi, Jhohann Richard de Lima and Moreira, Fernanda de Lima and Marques, Maria Paula and Duarte, Geraldo and Suarez-Kurtz, Guilherme and Lanchote, Vera Lucia},
year = {2020},
doi = {10.1016/j.jchromb.2020.122074},
journal   = {Journal of Chromatography B}
}