?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Paulina&rft.au=Bondaronek%2C+Paulina&rft.aulast=Bondaronek&rft.tpages=519&rft.degree=Doctoral&rft.inst=UCL+(University+College+London)&rft.title=The+public+health+potential+of+mobile+applications+to+increase+physical+activity&rft.date=28+August+2020