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Dyfyniad Arddull ChicagoMaghera, Amy, et al. You Are How You Recruit: A Cohort and Randomized Controlled Trial of Recruitment Strategies. BioMed Central, 2014.
Dyfyniad MLAMaghera, Amy, et al. You Are How You Recruit: A Cohort and Randomized Controlled Trial of Recruitment Strategies. BioMed Central, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.