Why Did Russia Ban The Use Of Microwave Ovens?

"In Russia, microwave ovens were banned in 1976 because of their negative health consequences as many studies were conducted on their use. The ban was lifted after Perestroika in the early 90’s."
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Further reading: http://www.apparentlyapparel.com/2/post/2011/08/why-did-russia-ban-the-use-of-microwave-ovens.html

"Microwave Ovens Reconsidered", James M. Haig, N.C. (.pdf)
http://www.apparentlyapparel.com/uploads/5/3/5/6/5356442/microwave_ovens_reconsidered.pdf