материалом настоящего исследования

материалом настоящего исследования явились случаи первичных заболеваний или первичной декомпенсации у лиц, которые по различным причинам сменили постоянное место проживания в северных широтах и переехали на постоянное место проживания (или сроки длительного пребывания) в южные широты

Results (English) 1:

the material of the present study were cases of primary disease or primary decompensation in patients who, for various reasons, have changed the permanent place of residence in the northern latitudes and moved to a permanent place of residence (or periods of long stay) in the South,

Results (English) 2:

material of the present study were cases of primary disease or primary decompensation in patients who for various reasons have changed permanent residence in the northern latitudes and moved to a permanent place of residence (or times long stay) in southern latitudes

Results (English) 3:

Material of the study were the primary disease or primary conductivity from persons,Which, for various reasons have changed a permanent place of residence in the northern latitudes and moved to a permanent place of residence (or time-frame for a long stay) in south latitudes