Waleed Omar

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

Stephen R Knight, Riinu Pius, Thomas M Drake et al. · The Lancet · 2021 · 310 citations · Full text

Medicine, Oncology, Surgery +13

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

James Glasbey, Adesoji Ademuyiwa, Adewale Adisa et al. · The Lancet Oncology · 2021 · 289 citations · Full text

Medicine, Oncology, Surgery +11

Rubber band ligation for 750 cases of symptomatic hemorrhoids out of 2200 cases

Amir Fikry, Waleed Omar, Elyamani Fouda et al. · World Journal of Gastroenterology · 2008 · 100 citations · Full text

Medicine, Surgery, Hemostasis +10

Comparative study between biofeedback retraining and botulinum neurotoxin in the treatment of anismus patients

Mohamed Farid, Hisham Abd El Monem, Waleed Omar et al. · International Journal of Colorectal Disease · 2008 · 82 citations

Medicine, Neurology, Neuroscience +9

Laparoscopic ventral mesh rectopexy <i>vs</i> Delorme's operation in management of complete rectal prolapse: a prospective randomized study

Sameh Hany Emile, Hosam Ghazy Elbanna, Mohamed Youssef et al. · Colorectal Disease · 2016 · 73 citations

Medicine, Surgery, Urology +15