00668naa#a2200229#i#450# EN\\bibl\56910 20241121234739.4 2712-8164 20220925b2022####ek#y0engy0150####ca RUS RU ON THE ISSUE OF TRENDS AND CAUSES OF INFANT MORTALITY Journal article Astrakhan Astrakhan State Medical University 2022 8 с. Journal article local . 616 - 053.31 - 036.88 RUS Shapovalova Marina A Boyko Yuriy P Ugurchieva Khyadi Yu Abramova Dar'ya A Ezhaev Akhmed V kaspmed.ru