@article{articleacb6a848,
title   = {Changes in apical base sagittal relationship in class II malocclusion treatment with and without premolar extractions: a systematic review and meta-analysis},
author = {Janson, Guilherme and Del Castillo, Aron Aliaga and Niederberger, Ana},
year = {2017},
doi = {10.2319/030716-198.1},
journal   = {Angle Orthodontist}
}