Vorotyntsev, S. I., M. B. Hrynovska, M. M. Sofilkanych, and O. V. Zakharchuk. “Efficacy of Regional Analgesia Techniques in Abdominal Surgery Patients With Obesity”. Pathologia, no. 2, Sept. 2018, doi:10.14739/2310-1237.2018.2.141426.