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1
by Cleophas, Ton J., Zwinderman, A.H.
Published 2002
Springer Netherlands
“... in the British Medical Journal. Until then, observations had been uncontrolled. Initially, trials frequently did...”
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2
by Cleophas, Ton J., Zwinderman, A.H.
Published 2000
Springer Netherlands
“... in the British Medical Journal. Until then, observations had been uncontrolled. Initially, trials frequently did...”