Intervention
The first study group received antenatal corticosteroids in the form of intramuscular dexamethasone sodium phosphate (produced by Taizhou Overseas International Ltd. 126-128 Qingnian Road Jiaojiang, Taizhou,
Zhejiang, China).
The second study group received antenatal corticosteroids in the form of intramuscular betamethasone sodium phosphate (USP 12601, CAT No 1068004, Lot: R004E0, Twin brook Pkwy, Rockville MD, +1-301-881-0666, Singapore)
The control group received intramuscular water for injection as placebo (Produced by Juhel pharmaceutical limited, Nigeria).