Abstract
The literature search performed by Wall and his associates in conjunction with their study1 failed to identify a randomized intervention trial carried out by our group several years ago, aimed at reducing infant exposure to environmental tobacco smoke(ETS).2 In common with Wall's study, our trial was carried out in primary care offices and used a low-impact intervention strategy. Our study was different, however, in that the infants' interpreted urine cotinine measurements were incorporated into the intervention and were also used to assess ETS exposure in the cases and controls.
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