Recruiting participants for an international mHealth study via Facebook Ads: Experiences from the Untire App RCT
| Autor: | Spahrkäs, Simon S., Looijmans, Anne, Sanderman, Robbert, Hagedoorn, Mariët |
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| Zdroj: | In Internet Interventions March 2021 23 |
| Databáze: | ScienceDirect |
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