Received: 4 June 2020
Revised: 8 August 2020
Accepted: 11 September 2020
First Online: 17 September 2020
Compliance with ethical standards
: Iva Hojsak received payment/honorarium for lectures or consultation from BioGaia, Nutricia, Nestle, Chr Hansen, Biocodex, Oktal Pharma; Ivana Trivić, Tena Niseteo and Oleg Jadrešin declare no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: Not applicable for this manuscript.