I. Ortega Vázquez

Effect of COVID-19 pandemic lockdowns on planned cancer surgery for 15 tumour types in 61 countries: an international, prospective, cohort study

Dinh Q. Phung, C. A. Shaw, M. Kumar, 2021, The Lancet Oncology.

Machine learning risk prediction of mortality for patients undergoing surgery with perioperative SARS-CoV-2: the COVIDSurg mortality score

Cheng Soon Ong, Mohammad Hossein Khosravi, Kevin C. Chu, 2021, The British journal of surgery.

Delaying surgery for patients with a previous SARS‐CoV‐2 infection

Mohammed I. Alghamdi, Anna Fernández Torné, M. Kumar, 2020, The British journal of surgery.

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.

Preoperative nasopharyngeal swab testing and postoperative pulmonary complications in patients undergoing elective surgery during the SARS-CoV-2 pandemic

Mohammed I. Alghamdi, Anna Fernández Torné, C. W. Chan, 2020, The British journal of surgery.

Outcomes from elective colorectal cancer surgery during the SARS‐CoV‐2 pandemic

A. Haynes, D. Mutter, A. Urbieta, 2020, Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland.

Early outcomes and complications following cardiac surgery in patients testing positive for coronavirus disease 2019: An international cohort study

Cheng Soon Ong, Mohammad Hossein Khosravi, Muhammad Abubakar Siddique, 2021, The Journal of Thoracic and Cardiovascular Surgery.