Fik, V. B., I. V. Chelpanova, and 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):133-37. https://doi.org/10.26641/1997-9665.2019.3.133-137.