@article{Vlachopoulos:44965,
      author        = "Vlachopoulos, D. and Barker, A.R. and Williams, C.A. and
                       Knapp, K.M. and Metcalf, B.S. and Gracia-Marco, L.",
      title         = "{Effect of a program of short bouts of exercise on bone
                       health in adolescents involved in different sports: The
                       PRO-BONE study protocol Health behavior, health promotion
                       and society}",
      year          = "2015",
}