Same here, and oddly I seem unable to turn up a good book passage or scientific paper on the subject (maybe it's just that my Google Books and Scholar keywords are bad?). Surely someone, somewhere, must've written a review article with a title like, "The Effects of a Vacuum on the Human Body", providing a nice survey of the known facts?

The closest I can find is a 1974 paper reviewing the effects of local pressure reductions, e.g. placing someone's arm in a low-pressure chamber, or applying high suction to a wound. Unfortunately, doesn't seem to be available online, but here's the first page: http://physrev.physiology.org/cgi/pdf_extract/54/3/566