Funding for this research was provided by:
Uniwersytet Jagielloński Collegium Medicum (UJ K/ZDS/003867)
Received: 3 September 2020
Accepted: 20 December 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: Detailed information about the aim and course of the study was given to all parents or legal guardians of the participating infants, and written informed consent was obtained. All procedures were carried out in compliance with the ethical principles laid forth in the Helsinki Declaration of 1964 and its subsequent amendments. The study protocol was approved by the Bioethical Committee of Jagiellonian University, Cracow (ref. no. KBET/209/B/2012).
: Not applicable.
: RH, who drafted the manuscript collaboratively with PK, is an employee of Chiesi Poland, the company which provided financial support for the publication of this article. The study presented was neither funded by Chiesi nor was the company involved in its design, data collection and the decision to publish.