Mohammad, T., M. Mozaffor, S. Akter, .-. Mohammad Obaidullah, M. A. K. Miah, M. S. Rahman, S. A. Habib, S. Siddique, S. Alam, and S. Mehzabin. “A Comparison of Using Crystalloid Preloading and Co-Loading in Caesarean Section Operation Under Spinal Anaesthesia and Its Association With Spinal Anaesthesia Induced Hypotension and Heart Rate Variability”. Journal of Dhaka Medical College, vol. 29, no. 1, Jan. 2021, pp. 12-17, doi:10.3329/jdmc.v29i1.51164.