Abdul Karim Othman, Mohd Nazri Ali, Mohd Habibullah Zakaria, Wan Nasrudin Wan Ismail, and Nurul Aimi Mustaffa, “4 Minutes Rule in Perimortem Caesarean Delivery: Does it Still Relevant? Case Series”, GJMR, vol. 20, no. E1, pp. 15–17, Jan. 2020.