APA (7th ed.) Citation

Althoff, K. N., Jacobson, L. P., Cranston, R. D., Detels, R., Phair, J. P., Li, X., . . . (MACS), M. A. C. S. (2014). Age, comorbidities, and AIDS predict a frailty phenotype in men who have sex with men. Journals of Gerontology Series A: Biological Sciences & Medical Sciences, 69A(2), 189. https://doi.org/10.1093/gerona/glt148

Chicago Style (17th ed.) Citation

Althoff, Keri N., Lisa P. Jacobson, Ross D. Cranston, Roger Detels, John P. Phair, Xiuhong Li, Joseph B. Margolick, and Multicenter AIDS Cohort Study (MACS). "Age, Comorbidities, and AIDS Predict a Frailty Phenotype in Men Who Have Sex with Men." Journals of Gerontology Series A: Biological Sciences & Medical Sciences 69A, no. 2 (2014): 189. https://doi.org/10.1093/gerona/glt148.

MLA (9th ed.) Citation

Althoff, Keri N., et al. "Age, Comorbidities, and AIDS Predict a Frailty Phenotype in Men Who Have Sex with Men." Journals of Gerontology Series A: Biological Sciences & Medical Sciences, vol. 69A, no. 2, 2014, p. 189, https://doi.org/10.1093/gerona/glt148.

Warning: These citations may not always be 100% accurate.