Aya Elkhalawy

Effects of hospital facilities on patient outcomes after cancer surgery: an international, prospective, observational study

Ramadan M. Hamed, Tsz Lun Ernest Wong, Amr H. Ali, 2022, The Lancet. Global health.

Global variation in postoperative mortality and complications after cancer surgery: a multicentre, prospective cohort study in 82 countries

Ramadan M. Hamed, Tsz Lun Ernest Wong, Amr H. Ali, 2021, The Lancet.

Elective surgery system strengthening: development, measurement, and validation of the surgical preparedness index across 1632 hospitals in 119 countries

Andrea I. Ramos, G. E. Jones, Abdullah A. Albarrak, 2022, The Lancet.