From Online Randomized Controlled Trials to Participant Preference Studies: Morphing the San Francisco Stop Smoking Site into a Worldwide Smoking Cessation Resource
Main Authors: | , , , , |
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Format: | Online |
Language: | English |
Published: |
Gunther Eysenbach
2012
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Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3414852/ |