APA (7th ed.) Citation

O, B., M, S., MP, S., C, P., & D, C. (2024). Effects of vitamin D levels during pregnancy on prematurity: A systematic review protocol. BMJ open, 14(2), e076702. https://doi.org/10.1136/bmjopen-2023-076702

Chicago Style (17th ed.) Citation

O, Barbosa, Sim-Sim M, Silvestre MP, Pedro C, and Cruz D. "Effects of Vitamin D Levels During Pregnancy on Prematurity: A Systematic Review Protocol." BMJ Open 14, no. 2 (2024): e076702. https://doi.org/10.1136/bmjopen-2023-076702.

MLA (9th ed.) Citation

O, Barbosa, et al. "Effects of Vitamin D Levels During Pregnancy on Prematurity: A Systematic Review Protocol." BMJ Open, vol. 14, no. 2, 2024, p. e076702, https://doi.org/10.1136/bmjopen-2023-076702.