AL-Henehana, Nawal, and manal albadani. “Effect of Khat Chewing and Smoking on Estrogen,Calcium and Lipid Profile in Premenopausal Womenin Sana’a City”. Institutional Repository for Scientific Scholarship at 21 September University for Medical and Applied Sciences, vol. 3, no. 1, Dec. 2022, pp. 1-80, https://doi.org/10.65693/irss.2022.v3i1.260.