title: Sociology. Experimenting with buddies.
authors.affiliation: Center for Nonlinear Dynamics in Economics and Finance, University of Amsterdam, 1018 XE Amsterdam, Netherlands. m.j.vanderleij@uva.nl
authors.forename: Marco J
authors.initials: MJ
authors.lastname: van der Leij
mesh_terms: D015930:Diet Records; D005260:Female; D015438:Health Behavior; D006801:Humans; D020407:Internet; D007398:Interpersonal Relations; D008297:Male; D009765:Obesity; D060756:Social Networking; D012944:Social Support