Lisnyy, I. I., Chechelnitskiy, O. E. and Emets, V. M. (2016) “The frequency of mosaic epidural block during labour. The comparison of two kinds of epidural catheters”, Pain medicine, 1(2). Available at: https://painmedicine.org.ua/index.php/pnmdcn/article/view/14 (Accessed: 10August2020).