Nasogastric tube in mechanical ventilated patients: ETCO2 and pH measuring to confirm correct placement. A pilot study. - Ceruti, Samuele; Dell'Era, Simone; Ruggiero, Francesco; Bona, Giovanni; Glotta, Andrea; Biggiogero, Maira; Tasciotti, Edoardo; Kronenberg, Christoph; Lollo, Gianluca; Saporito, Andrea (PLoS ONE, 2022)