Study	Reason for exclusion
Cui 2000	Research in animal models
Dockendorf 1993	Research in animal models
Fekete 1981	Retrospective study
Freeman 1982	Not about omentoplasty after oesophagectomy
Goldsmith 1968	Retrospective study
Goldsmith 1973	Not about omentoplasty after oesophagectomy for oesophageal cancer
Hayari 2004	Research in animal models
Ignjatovic 1998	Not about omentoplasty after oesophagectomy for oesophageal cancer
Karaoglanoglu 2007	Commentary
Liebermann‐Meffert 1991	Review
Liebermann‐Meffert 2000	Review about omentum
Liu 2006	Retrospective study
Maeda 1999	Retrospective study
Martins 1999	Investigation on protection of great vessels, not on anastomosis
Nikoladze 1993	Retrospective study
Ohwada 2000	Retrospective study
Ohwada 2002	Retrospective study
Thakur 2004	Retrospective study
Thakur 2007	Retrospective study about oesophagectomy and other thoracic diseases
Yasunori 2004	Retrospective study
Yener 2010	Retrospective study
Yuan 2011	Editorial
Yuan 2012	Prior version of this systematic review
Zhang 1987	Retrospective study