[1]Faculty of Medicine Riga Stradi??University Riga Latvia;
[2]Scientific Laboratory of Molecular Genetics Riga Stradi??University Riga Latvia;
[3]Department of Obstetrics and Gynecology Riga Stradi??University Riga Latvia;
[4]Riga Maternity Hospital Riga Latvia;
IVF twins; Gestational diabetes; Pregnancy induced hypertension;