Biofeedback and Digitalized Motivational Interviewing to Increase Daily Physical Activity: Series of Factorial N-of-1 Randomized Controlled Trials Piloting the Precious App (Preprint)
Published in 2021 by
Johanna Nurmi,
Keegan Knittle,
Felix Naughton,
Stephen Sutton,
Todor Ginchev,
Fida Khattak,
Carmina Castellano-Tejedor,
Pilar Lusilla-Palacios,
Niklas Ravaja,
Ari Haukkala 
