For citations:

Khasanova S.S., Kamilova A.T., Akhmedova D.I. Fecal elastase activity in premature children. Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics). 2019;64(5):44-48. (In Russ.) https://doi.org/10.21508/1027-4065-2019-64-5-44-48