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National and multinational prospective trial registers
Liesl Grobler, Nandi Siegfried, Lisa Askie, Lotty Hooft, Prathap Tharyan, Gerd AntesVolume:
372
Year:
2008
Language:
english
DOI:
10.1016/s0140-6736(08)61498-1
File:
PDF, 50 KB
english, 2008