Shahid, Ahmad Daniyal, Haitao Zhu, Hong Yan Lu, Ming Chang, Abdul Malik, Murad Ali Sher, and Walid Ullah Adil. “The Early Prognosis Value of Activin A in Premature Infants’ Brain Injury”. Journal of Advanced Research in Medical and Health Science (ISSN 2208-2425) 3, no. 3 (March 31, 2017): 06–10. Accessed May 18, 2024. https://nnpub.org/index.php/MHS/article/view/622.