the key words here are

来源: blackmatter 于 2012-08-14 20:17:16 [] [旧帖] [给我悄悄话] 阅读数 : (196 bytes)

"long term effect" and "excessive amount". What is long term effect?  How much is excessive amount? Before we are clear of that, i wouldn't take the chance unless i don't have choices.

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