Shaikh S, Jamal S, Mairaj F, Asim A. Frequency of ABO Blood Group Discrepancies and its Classification into Groups in Tertiary Care Hospital Karachi. PJMD [Internet]. 2019Apr.5 [cited 2024May19];7(4):4. Available from: http://ojs.zu.edu.pk/ojs/index.php/pjmd/article/view/143