Ronenson, A. M., E. M. Shifman, and A. V. Kulikov. “Assessment of Volemic Status in Postpartum Period: A Pilot Prospective Cohort Study”. Annals of Critical Care, no. 3, Oct. 2021, pp. 88-97, https://doi.org/10.21320/1818-474X-2021-3-88-97.