Berglund, Staffan K.
Chmielewska, Anna M.
Domellöf, Magnus
Andersson, Ola
Article History
Received: 26 February 2020
Revised: 6 June 2020
Accepted: 11 June 2020
First Online: 1 July 2020
Competing interests
: The authors declare no competing interests.
: The research was approved by the Regional Ethical Review Board of Lund University and included pregnant women gave written informed consent.