"R30" . _:b662934330 . "Early recognition of the 2009 pandemic influenza A (H1N1) pneumonia by chest ultrasound" . . . "10.1186/cc11201" . "Springer Science and Business Media LLC" . . _:b662934330 . "16" . . "R30" . . . . . . "10.1186/cc11201" . "16" . . _:b662934330 . . _:b662934330 . . . . . _:b662934330 . . . . . . . "10.1186/cc11201" . _:b662934330 "2023-12-22T11:52:29.369478"^^ . "2012"^^ .