APA (7th ed.) Citation

Nasia Safdar, Harold Lehmann, Jing Sun, Brijesh Patel, Hongfang Liu, Peter Robinson, . . . Xiaohan Tanner Zhang. (2024). Evaluating COVID-19 vaccine effectiveness during pre-Delta, Delta and Omicron dominant periods among pregnant people in the U.S: Retrospective cohort analysis from a nationally sampled cohort in National COVID Collaborative Cohort (N3C). BMJ Publishing Group.

Chicago Style (17th ed.) Citation

Nasia Safdar, et al. Evaluating COVID-19 Vaccine Effectiveness During Pre-Delta, Delta and Omicron Dominant Periods Among Pregnant People in the U.S: Retrospective Cohort Analysis from a Nationally Sampled Cohort in National COVID Collaborative Cohort (N3C). BMJ Publishing Group, 2024.

MLA (9th ed.) Citation

Nasia Safdar, et al. Evaluating COVID-19 Vaccine Effectiveness During Pre-Delta, Delta and Omicron Dominant Periods Among Pregnant People in the U.S: Retrospective Cohort Analysis from a Nationally Sampled Cohort in National COVID Collaborative Cohort (N3C). BMJ Publishing Group, 2024.