APA   Click to copy
Oedingen, C., Scholz, S., & Razum, O. (2018). Systematic review and meta-analysis of the association of combined oral contraceptives on the risk of venous thromboembolism: The role of the progestogen type and estrogen dose. Thrombosis Research, 165, 68–78.

Chicago/Turabian   Click to copy
Oedingen, Carina, Stefan Scholz, and Oliver Razum. “Systematic Review and Meta-Analysis of the Association of Combined Oral Contraceptives on the Risk of Venous Thromboembolism: The Role of the Progestogen Type and Estrogen Dose.” Thrombosis research 165 (2018): 68–78.

MLA   Click to copy
Oedingen, Carina, et al. “Systematic Review and Meta-Analysis of the Association of Combined Oral Contraceptives on the Risk of Venous Thromboembolism: The Role of the Progestogen Type and Estrogen Dose.” Thrombosis Research, vol. 165, 2018, pp. 68–78.

@article{oedingen2018a,
  title = {Systematic review and meta-analysis of the association of combined oral contraceptives on the risk of venous thromboembolism: The role of the progestogen type and estrogen dose},
  year = {2018},
  journal = {Thrombosis research},
  pages = {68--78},
  volume = {165},
  author = {Oedingen, Carina and Scholz, Stefan and Razum, Oliver}
}