title: Smoking patterns, nicotine intake at different times of day and changes in two cardiovascular variables while smoking cigarettes.
mesh_terms: D000293:Adolescent; D000328:Adult; D002319:Cardiovascular System / Q000503:physiopathology; D002940:Circadian Rhythm; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D009538:Nicotine / Q000008:administration & dosage / Q000494:pharmacology; D012881:Skin Temperature / Q000187:drug effects; D012907:Smoking / Q000503:physiopathology*
chemical_list: D009538:Nicotine