title: Mobile phone follow-up of subjects included in a prospective cohort study: unexpected difficulties.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Pitrou
authors.forename: Luc
authors.initials: L
authors.lastname: Dauchet
authors.forename: Laurent
authors.initials: L
authors.lastname: Bailly
authors.forename: Sophie El
authors.initials: SE
authors.lastname: Koubi
authors.forename: Marie-Pierre
authors.initials: MP
authors.lastname: Tavolacci
authors.forename: Joël
authors.initials: J
authors.lastname: Ladner
mesh_terms: D040421:Cell Phone; D003625:Data Collection / Q000379:methods*; D006801:Humans; D011446:Prospective Studies; D013689:Telephone