Munazza Khan, Zafaruddin, Noor Ul Haq, Saba Farooq, Fareeha Hasan 2022. Difference of Clotting Time and Bleeding Time in the ABO Blood Groups. Pakistan Journal of Medical & Health Sciences. 16, 07 (Sep. 2022), 903. DOI:https://doi.org/10.53350/pjmhs22167903.