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Randomised controlled trials in perinatal medicine: 2. Recruitment of a pregnant woman or her newborn child into more than one trial
Peter BrocklehurstVolume:
104
Year:
1997
Language:
english
Pages:
3
DOI:
10.1111/j.1471-0528.1997.tb12016.x
File:
PDF, 301 KB
english, 1997