Corresponds to an article about COVID-19 respiratory infections in the journal Medicina Intensiva . :
Corresponds to a local institutional ID at the University of Southampton for a paper discussing base-extension semantics . 502230_471218
The identifiers and "471218" do not correspond to a single specific research paper or recognized academic document. Instead, they match separate entities in various databases: 502230 : 502230_471218
Corresponds to a PhD thesis on English as a Lingua Franca at the University of Southampton. 502230_471218