For citations:

Khusnutdinova L.R., Sadykova D.I., Nigmatullina R.R. Blood serotonin concentration in children with COVID-19. Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics). 2022;67(5):163-169. (In Russ.) https://doi.org/10.21508/1027-4065-2022-67-5-163-169