Mehdi Jahantigh, Marzieh Ghasemi, Narjes Noori, Alireza Dashipour, Mohammadreza Sargolzaei, “Evaluation of the Relationship between Maternal Serum Vitamin D Level and Abortion in Patients Referred to Ali Ibn Abitaleb Hospital in Zahedan in 2018”, Annals of RSCB, pp. 8238–8243, Apr. 2021.