1 Paris Diderot University, Sorbonne Paris Cité, AP-HP, Surgical Oncologic and Digestive Unit, Lariboisière Hospital, 2, rue Ambroise-Paré, 75010 Paris, France.
2 Paris Diderot University, Sorbonne Paris Cité, AP-HP, Surgical Oncologic and Digestive Unit, Lariboisière Hospital, 2, rue Ambroise-Paré, 75010 Paris, France. Electronic address: marc.pocard@gmail.com.
3 Université Paris 13, UPRES Sorbonne Paris Cité, 93206 Saint-Denis, France; AP-HP, Department of Thoracic and Vascular Surgery, Avicenne Hospital, 93009 Bobigny, France.