Slopien, R.
Owecki, M.
Slopien, A.
Bala, G.
Meczekalski, B.
Article History
Received: 4 March 2019
Accepted: 19 June 2019
First Online: 7 August 2019
Compliance with ethical standards
:
: The authors declare that have no conflict of interest.
: The study was approved by the Ethical Committee of Poznan University of Medical Sciences.
: Informed consent obtained from all women studied.