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These are not unbreakable rules , but should be considered flexible guidelines for disposable materials . Study 7 - An investigation of progress already made towards permissive guidelines for digital preservation : short term short cuts may be false economies in the medium term . Lynne Mofenson , M.D ., of the NIH said that current guidelines for pregnant women - - as for most people treated with antiretrovirals - - call for a three-drug regimen . " PPML 2.0 defines the first-ever guidelines for reliable file transfer in the graphic arts , " says Dave deBronkart , leader of PODi standards activities . We're living in the age of 8 megapixel prosumer digital SLRs and 100 dollars / gb flash cards , and I 'd say we could stand to see some new guidelines for digital camera using traveling photographers ...