- 1056/NEJMsa020660. PMID 12362011.
Helgason AR,
Tomson T, Lund KE,
Galanti R,
Ahnve S,
Gilljam H (September 2004). "Factors
related to
abstinence in a telephone...
- PMID 12362011. S2CID 8364269. Helgason, AR; Tomson, T; Lund, KE; Galanti, R;
Ahnve, S; Gilljam, H (September 2004). "Factors
related to
abstinence in a telephone...