Стаднюк, Л. А., Кононенко, О. А., Давидович, О. В. and Олійник, М. В. (2019) “Vitamin B12 deficiency in the elderly and the possibility of influencing the nature of drug treatment type 2 diabetes”, Family medicine, (3), pp. 97–99. doi: 10.30841/2307-5112.3.2019.178591.