APA (7th ed.) Citation

Cai, M., Zhang, B., Yang, R., Zheng, T., Dong, G., Lin, H., . . . Qian, Z. (2021). Association between maternal outdoor physical exercise and the risk of preterm birth: A case-control study in Wuhan, China. BMC Pregnancy & Childbirth, 21(1), 1. https://doi.org/10.1186/s12884-021-03678-9

Chicago Style (17th ed.) Citation

Cai, Miao, et al. "Association Between Maternal Outdoor Physical Exercise and the Risk of Preterm Birth: A Case-control Study in Wuhan, China." BMC Pregnancy & Childbirth 21, no. 1 (2021): 1. https://doi.org/10.1186/s12884-021-03678-9.

MLA (9th ed.) Citation

Cai, Miao, et al. "Association Between Maternal Outdoor Physical Exercise and the Risk of Preterm Birth: A Case-control Study in Wuhan, China." BMC Pregnancy & Childbirth, vol. 21, no. 1, 2021, p. 1, https://doi.org/10.1186/s12884-021-03678-9.