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. 1999 Sep 23;341(13):988-92.
doi: 10.1056/NEJM199909233411311.

Use of placebo surgery in controlled trials of a cellular-based therapy for Parkinson's disease

T B Freeman  1 , D E Vawter, P E Leaverton, J H Godbold, R A Hauser, C G Goetz, C W Olanow
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Use of placebo surgery in controlled trials of a cellular-based therapy for Parkinson's disease

T B Freeman et al. N Engl J Med. .
No abstract available

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