https://annalsmicrobiology.biomedcentral.com/articles/10.1007/s13213-014-0978-9
https://annalsmicrobiology.biomedcentral.com/articles/10.1007/s13213-014-0992-y
https://annalsmicrobiology.biomedcentral.com/articles/10.1007/s13213-014-1002-0
https://annalsmicrobiology.biomedcentral.com/articles/10.1007/s13213-014-0988-7