@article{articlef44dc281,
title   = {The Brief Negative Symptom Scale: Validation in a multicenter Brazilian study},
author = {Medeiros, Heydrich Lopes Virgulino de and Elkis, Helio},
year = {2018},
doi = {10.1016/j.comppsych.2018.06.007},
journal   = {Comprehensive psychiatry}
}