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Quality control methods for telephone interviewing in randomized controlled trials
Donna L. Perlmutter, Roberta Scherer, Olga Lurye, Lucy HowardVolume:
19
Year:
1998
Language:
english
Pages:
1
DOI:
10.1016/s0197-2456(98)80228-6
File:
PDF, 132 KB
english, 1998