Order of authorship in the original publication: Raoult, Fenollar, Birg. Raoult and colleagues cultured the infectious agent of Whipple's disease from the stool of a patient with the disease. In the process the authors learned that this particular bacillus is resistant to glutaraldehyde, a disinfectant that was then used to decontaminate endoscopes used for colonoscopy and other procedures.

(Thanks to Juan Weiss for this reference and its interpretation.)