Бабиенко, В. В.; Шаныгин, А. В.; Ватан, М. Н.; Бабич, М. С.; Babienko, V.; Shanygin, A.; Vatan, M.; Babich, M.
(2021)
The urgency of the problem of vitamin D deficiency and deficiency is undeniable. All over
the world, this problem is faced by people regardless of gender, age and profession. It does not bypass both
southern countries ...