>> well, they were testing -- i went all the way to djibouti, africa, for the diarrhea chapter. [laughter] that's just the kind of gal i am. [laughter] and in a lot of special operations, navy seals, etc., going out to various yemen, somalia, north africa. and i went with a diarrhea researcher who was testing a very quick, one-dose regimen where you would at least be, you know, back on your feet in a few -- in a matter of hours rather than days. so that's one thing. that's what they were testing. so that's -- >> top secret9. >> top secret. no, actually, it'll be coming soon to a drugstore near you. [laughter] >> one thing that was interesting in the book, you know, we always sort of take for granted that mexico is kind of like the poster child for travelers, you know, but how mexico won that honor is kind of an interesting little story. >> yeah. if you go on to club meld which is a -- club med which is a database of all the medical journals, most of them anyway, and you put in diarrhea and guadalajara, you will get 35 medical journals. it's like synonymous with diarrhea. because