APA-viite

Birkelbach, O., Mörgeli, R., Spies, C., Olbert, M., Weiss, B., Brauner, M., . . . Balzer, F. (2019). Routine frailty assessment predicts postoperative complications in elderly patients across surgical disciplines – a retrospective observational study. BMC Anesthesiol.

Chicago-tyylinen lähdeviittaus

Birkelbach, Oliver, et al. "Routine Frailty Assessment Predicts Postoperative Complications in Elderly Patients Across Surgical Disciplines – a Retrospective Observational Study." BMC Anesthesiol 2019.

MLA-viite

Birkelbach, Oliver, et al. "Routine Frailty Assessment Predicts Postoperative Complications in Elderly Patients Across Surgical Disciplines – a Retrospective Observational Study." BMC Anesthesiol 2019.

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