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Open-Access Journal
Opinion Review
Review
Minireviews
Alessandro Di Vilio, Andrea Vergara, Alfonso Desiderio, Franco Iodice, Alessandro Serio, Stefano Palermi, Francesco Gambardella, Simona Sperlongano, Renato Gioia, Maria Acitorio, Antonello D'Andrea 
World J Crit Care Med 10(5):194-203. Published online Sep 9, 2021. doi: 10.5492/wjccm.v10.i5.194
Case Control Study
Observational Study
Janet Rodríguez-Torres, Irene Cabrera-Martos, Laura López-López, Florencio Quero-Valenzuela, Lawrence Patrick Cahalin, Marie Carmen Valenza 
World J Crit Care Med 10(5):232-243. Published online Sep 9, 2021. doi: 10.5492/wjccm.v10.i5.232
Jose I Iglesias, Andrew V Vassallo, Jesse B Sullivan, Yasmine Elbaga, Vishal V Patel, Nikunjkumar Patel, Lydia Ayad, Payam Benson, Marina Pittiglio, Emad Gobran, Alexander Clark, Wajahat Khan, Kaliope Damalas, Rajesh Mohan, Satyendra P Singh 
World J Crit Care Med 10(5):244-259. Published online Sep 9, 2021. doi: 10.5492/wjccm.v10.i5.244
Systematic Reviews
Aikaterini Gkoufa, Eleni Maneta, Georgios N Ntoumas, Vasiliki E Georgakopoulou, Athina Mantelou, Stelios Kokkoris, Christina Routsi 
World J Crit Care Med 10(5):278-289. Published online Sep 9, 2021. doi: 10.5492/wjccm.v10.i5.278
Meta-Analysis
Case Report