Khan, Ayesha, Neelam Barkat, Sidra Afzal, and Shehla. 2015. “Responsibility, Prevalence and Major Factors of Infertility: A Cross-Sectional Study in Karachi”. International Journal of Endorsing Health Science Research 3 (2):01-07. https://doi.org/10.29052/IJEHSR.v3.i2.2015.01-07.