Poon, L.Y.J. and Tsang, H.W.H. and Chan, T.Y.J. and Man, S.W.T. and Ng, L.Y. and Wong, Y.L.E. and Lin, C.-Y. and Chien, C.-W. and Griffiths, M.D. and Pontes, Halley and Pakpour, A.H. (2021) Psychometric properties of the Internet Gaming Disorder Scale–Short-Form (IGDS9-SF): systematic review. Journal of Medical Internet Research 23 (10), e26821. ISSN 2291-9694.