Amel H Mohmmed, Nadhum A Awad and Adnan J M AL-Fartosy (2019) “Study of Trace Elements Selenium, Copper, Zinc and Manganese Level in Polycystic Ovary Syndrome (PCOS)”, International Journal for Research in Applied Sciences and Biotechnology, 6(6), pp. 16-22. doi: 10.31033/ijrasb.6.6.4.