Reference 4 should read as follows:

Zhuravleva, L.V. and Lopina, N.A., Importance of the intima media thickness of the complex carotid arteries in predicting atherosclerotic lesions of the coronary vessels, Res. Result. Med. Pharm., 2017, vol. 3, no. 10, pp. 41–50. https://doi.org/10.18413/2313-8955-2017-3-3-41-50