Faculty of Medicine, Riga Stradi?? University, Riga, Latvia;
Faculty of Medicine, Riga Stradi?? University, Riga, Latvia;
Scientific Laboratory of Molecular Genetics, Riga Stradi?? University, Riga, Latvia;
Department of Obstetrics and Gynecology, Riga Stradi?? University, Riga, Latvia;
Riga Maternity Hospital, Riga, Latvia;
Department of Obstetrics and Gynecology, Riga Stradi?? University, Riga, Latvia;
Riga Maternity Hospital, Riga, Latvia;