title: Recruiting subjects for research studies in the era of Web 2.0.
authors: Venessa
authors: V
authors: Pena-Robichaux
authors: Alice J
authors: AJ
authors: Watson
mesh_terms: D000293:Adolescent; D000328:Adult; D035843:Biomedical Research / Q000379:methods* / Q000639:trends; D017046:Cost Savings; D005260:Female; D005544:Forecasting; D006801:Humans; D020407:Internet / Q000191:economics / Q000706:statistics & numerical data*; D008297:Male; D018579:Patient Selection; D014481:United States; D055815:Young Adult