OBSTETRICAL CAUSES OF MATERNAL MORTALITY. RESULTS OF PATHOANATOMICAL EXAMINATIONS Статья Mikhaleva L.M., Konoplyannikov A.G., Kudryavtseva Ya.Yu., Olenev A.S., Gracheva N.A., Biryukov A.E., Mikhalev S.A., Songolova E.N., Kryuchkova D.I. Voprosy Ginekologii, Akusherstva i Perinatologii. Dynasty Publishing House. Том 19. 2020. С. 99-109