Wibowo N, fitriana F. The Levels of Zinc, Selenium, Iron and Copper in Preterm Pregnancy do not Differ with those of Healthy Pregnancy: Kadar Seng, Selenium, Besi dan Tembaga pada Kehamilan Prematur tidak Berbeda dengan Kehamilan Sehat. Indones J Obstet Gynecol [Internet]. 2019 Apr. 26 [cited 2026 Aug. 24];7(2):86-91. Available from: https://www.inajog.com/index.php/journal/article/view/880