pid type title authors mentors source_title published_date url doi isbn issn eissn sfzg:2205 "journal article" "Relationship between COMT Gene Polymorphism, Anxiety, and Pain Perception during Labour" "Šanjug, Jadranka; Kuna, Krunoslav; Goldštajn, Marina Šprem; Dunkić, Lidija Fumić; Carek, Andreja; Negovetić Vranić, Dubravka"