APA (7th ed.) Citation
Hajek, A., & et al. Frailty and healthcare costs—longitudinal results of a prospective cohort study.
Chicago Style (17th ed.) Citation
Hajek, A., and et al. Frailty and Healthcare Costs—longitudinal Results of a Prospective Cohort Study.
MLA (9th ed.) Citation
Hajek, A., and et al. Frailty and Healthcare Costs—longitudinal Results of a Prospective Cohort Study.
Warning: These citations may not always be 100% accurate.