Douglas Calder
2PUBLICATIONS
4CO-AUTHORS
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Publications (2)
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|Jun 06, 2020
Facebook Recruitment Using Zip Codes to Improve Diversity in Health Research: Longitudinal Observational Study.Cornelia Pechmann, Connor Phillips, Douglas Calder
|Jan 15, 2020
The Use of Web-Based Support Groups Versus Usual Quit-Smoking Care for Men and Women Aged 21-59 Years: Protocol for a Randomized Controlled Trial.Cornelia Ann Pechmann, Douglas Calder, Connor Phillips
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