Descending necrotizing mediastinitis: a challenging infection. Selected results of a Moroccan bicentric study - El Hammoumi, Massine; Ouraini, Saloua; Bhairis, Mohammed; Kouatli, Hamid; Kamdem, Kemini Marius; Hassane Kabiri, El (Kardiochirurgia i Torakochirurgia Polska/Polish Journal of Thoracic and Cardiovascular Surgery, 2023)