DOI:
10.1055/s-00000111
ZFA - Zeitschrift für Allgemeinmedizin
LinksClose Window
References
Heatherton TF, Kozlowski LT, Frecker RC. et al.
Measuring the heaviness of smoking: using self-reported time to the first cigarette of the day and number of cigarettes smoked per day.
Br J Addict 1989; 84: 791-799
We do not assume any responsibility for the contents of the web pages of other providers.