Cita APA

Friedrich, S., & Friede, T. (2020). Causal inference methods for small non-randomized studies: Methods and an application in COVID-19. Contemp Clin Trials.

Chicago Style Citation

Friedrich, Sarah, i Tim Friede. "Causal Inference Methods for Small Non-randomized Studies: Methods and an Application in COVID-19." Contemp Clin Trials 2020.

Cita MLA

Friedrich, Sarah, i Tim Friede. "Causal Inference Methods for Small Non-randomized Studies: Methods and an Application in COVID-19." Contemp Clin Trials 2020.