Journal of Pharmaceutical Negative Results ¦ Volume 13 ¦ Special Issue 6 ¦ 2022 1104 Affordability of orthodontic treatment: a step towards the economic evaluation. Journal of Pharmaceutical Negative Results [Internet]. 2022 Oct. 10 [cited 2026 Jun. 17];:1104-9. Available from: https://www.pnrjournal.com/index.php/home/article/view/1894