Fik, V. B., Chelpanova, I. V., & Paltоv E. V. (2019). Morphometric studies of periodontal structures during opioid exposure at the end of six and eight weeks. Морфологія / Morphologia / Morfologìâ, 13(3), 133–137. https://doi.org/10.26641/1997-9665.2019.3.133-137