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BMJ.319.7206.375
BMJ.319.7206.375
http://dx.doi.org/10.1136/BMJ.319.7206.375
Understanding controlled trials. Randomisation methods: concealment
P356
Q33704547-127DA69F-5F83-474F-84F4-4DF7BC25FAD6
P356
BMJ.319.7206.375
http://dx.doi.org/10.1136/BMJ.319.7206.375