title: Social interaction and smoking topography in heavy and light smokers.
mesh_terms: D000328:Adult; D000367:Age Factors; D001519:Behavior; D005260:Female; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D012907:Smoking / Q000523:psychology*