APA (7th ed.) Citation

Bian, H., Pang, M., Wang, G., & Lu, Z. Non-collapsibility and built-in selection bias of period-specific and conventional hazard ratio in randomized controlled trials. BMC.

Chicago Style (17th ed.) Citation

Bian, Helen, Menglan Pang, Guanbo Wang, and Zihang Lu. Non-collapsibility and Built-in Selection Bias of Period-specific and Conventional Hazard Ratio in Randomized Controlled Trials. BMC.

MLA (9th ed.) Citation

Bian, Helen, et al. Non-collapsibility and Built-in Selection Bias of Period-specific and Conventional Hazard Ratio in Randomized Controlled Trials. BMC.