APA (7th ed.) Citation

Ludvigsson, J. F., Appelros, P., Askling, J., Byberg, L., Carrero, J., Ekström, A. M., . . . Sundström, J. (2021). Adaptation of the Charlson Comorbidity Index for Register-Based Research in Sweden. Clinical epidemiology, 13, 21-41. https://doi.org/10.2147/CLEP.S282475

Chicago Style (17th ed.) Citation

Ludvigsson, Jonas F., et al. "Adaptation of the Charlson Comorbidity Index for Register-Based Research in Sweden." Clinical Epidemiology 13 (2021): 21-41. https://doi.org/10.2147/CLEP.S282475.

MLA (9th ed.) Citation

Ludvigsson, Jonas F., et al. "Adaptation of the Charlson Comorbidity Index for Register-Based Research in Sweden." Clinical Epidemiology, vol. 13, 2021, pp. 21-41, https://doi.org/10.2147/CLEP.S282475.