could the top institutions in the States be foolish enough to be deceived and rashly start a clinical trial?
=> ...be so naive/gullible to be deceived and ...

Beaumont's saying regarding the acceptance of the procedure is absolutely a lie
=> is not true.<Beaumont may not be knowingly lying>

Recently, some top experts, under the pressure of Dr. Xiao's potential legal action, finally spoke out their opposite or rather negtive comments on the procedure.
=> some top experts, in spite of the potential lawsuit from Dr. Xiao, finally spoke up and raised serious questions about the procedure.

the procedure has ever been infamous across Chinese internet forums where there are full of complaints against it,
=> has become increasingly infamous across Chinese internet forums which are often times found to be full of complaints about it.
<there is full of => it's full of>

More seriously => and what's worse

Beaumont teem => team <two places>

in German => in Germany