Nitrous oxide/oxygen plus acetaminophen versus morphine in ST elevation myocardial infarction: open-label, cluster-randomized, non-inferiority study oleh Sandrine Charpentier, Michel Galinski, Vincent Bounes, Agnès Ricard-Hibon, Carlos El-Khoury, Meyer Elbaz, François-Xavier Ageron, Stéphane Manzo-Silberman, Louis Soulat, Frédéric Lapostolle, Alexandre Gérard, Delphine Bregeaud, Vanina Bongard, Eric Bonnefoy-Cudraz, for the SCADOL II investigators