@article{delgado_freire_wanderley_lemos_2016,  title={Analysis of the Construct Validity and Internal Consistency of the State-Trait Anxiety Inventory (STAI) State-Anxiety (S-Anxiety) Scale for Pregnant Women during Labor},  volume={38},  ISSN={0100-7203},  url={https://doi.org/10.1055/s-0036-1593894},  DOI={10.1055/s-0036-1593894},  number={11},  journal={Revista Brasileira de Ginecologia e Obstetrícia},  publisher={Federação Brasileira das Sociedades de Ginecologia e Obstetrícia},  author={Delgado, Alexandre Magno and Freire, Alessandra da Boaviagem and Wanderley, Elaine Lima Silva and Lemos, Andrea},  year={2016},  month={Nov},  pages={531–537} }