Text and Data Mining valid from 2019-08-08
Received: 9 June 2019
Revised: 11 July 2019
Accepted: 29 July 2019
First Online: 8 August 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This project was performed in the context of a routine quality assessment. All procedures performed were in accordance with ethical standards as laid down in the 1964 Helsinki declaration.
: Caregivers received information on the study and (anonymous) study participation and had to give oral consent in order for their children to be enrolled in the study. Since only infants < 24 months of age were included, children assent was not required.