Illicit substance use among university students from seven European countries: A comparison of personal and perceived peer use and attitudes towards illicit substance use

1. Helmer, S.M.
2. Mikolajczyk, R.T.
3. McAlaney, J.
4. Vriesacker, B.
5. Van Hal, G.
6. Akvardar, Y.
7. Guillen-Grima, F.
8. Salonna, F.
9. Stock, C.
10. Dempsey, R.C.
11. Bewick, B.M.
12. Zeeb, H.