Begum, M., M. Ehsan, M. Begum, F. Khan, M. Siddiqi, and H. Baby. “Is Surrogate LH Surge Essential in All Induced Cycles?”. Bangladesh Journal of Obstetrics & Gynaecology, Vol. 26, no. 2, Feb. 2013, pp. 72-76, doi:10.3329/bjog.v26i2.13783.