@article{coppola_sacchetto_mondola_2019,  title={Craving for heroin: difference between methadone maintenance therapy patients with and without ADHD},  volume={41},  ISSN={2237-6089},  url={https://doi.org/10.1590/2237-6089-2017-0159},  DOI={10.1590/2237-6089-2017-0159},  number={1},  journal={Trends in Psychiatry and Psychotherapy},  publisher={Associação de Psiquiatria do Rio Grande do Sul},  author={Coppola, Maurizio and Sacchetto, Giuseppe and Mondola, Raffaella},  year={2019},  month={Jan},  pages={83–86} }