Куклина, Л.В. et al. 2021. RISK FACTORS, THE COURSE OF PREGNANCY AND GESTATIONAL OUTCOMES IN DIFFERENT STAGES OF PREGNANCY IN PRETERM BIRTH. Mother and Baby in Kuzbass. 22, 2 (May 2021), 103–108. DOI:https://doi.org/10.24411/2686-7338-2021-10029.