Mailing strategies and costs of recruiting heavy smokers in CARET, a large chemoprevention trial.
Mailing strategies and costs of recruiting heavy smokers in CARET, a large chemoprevention trial.
复制标题
在大型化学预防试验 CARET 中招募重度吸烟者的邮寄策略和成本。
DOI:
10.1016/s0197-2456(97)00027-5
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发表时间:
1998
期刊:
影响因子:
--
通讯作者:
Glass,A
中科院分区:
文献类型:
--
作者:
Valanis,B;Blank,J;Glass,A