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Discover LudwigThe phrase "a sirs" is not correct in written English.
It is not usable because "sirs" is a plural noun and should not be preceded by the article "a." An example of a correct usage would be "Dear sirs," as a salutation in a formal letter.
Alternatives: "gentlemen" or "dear sirs."
Exact(33)
This latent period is not taken into account in a SIRS model.
Sepsis is defined as the combination of a SIRS and infection diagnosed macroscopically and microbiologically.
A SIRS epidemic model with known parameters is used to describe the propagation of the disease.
The disease propagation is described by a SIRS (susceptible plus infected plus recovered populations) epidemic model.
Muroya et al. [8] presented a SIRS epidemic with graded curve and incomplete recovery rates.
The same discussion was extended to a SIRS model by Liu [10].
Similar(27)
A) Sir David Bruce B Robert Koch CC) Sir William Osler D Sir Ronald Ross E Theobald Smithth Decide first.
A compartmental model based on these assumptions is customarily called a SIR or SIRS model.
Like a Sir John Falstaff".
Isn't Bob Geldof a sir?
Another fear: Calling a sir "ma'am," or a ma'am "sir".
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com