Wow; 3-5% incidence for a potentially lethal problem seems so high!
I guess I was wondering what evolutionary pressures would permit
continuity of this sort of problem. But if the term is heterogeneous
the way Rachel describes, with many different underlying causes
ranging from submucosal attachment to mechanical birth-related issues
figuring into that number, then perhaps it's not so high as all that.
That is, true "inherent" (as opposed to 'environmental') tt may not
be as prevalent as all that.
Interesting; thanks!
--
-S, roving evolutionary-biogeological-biostatistician-LLLL
(make that procrastinating, not roving).
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