he reduced daily usage of nicotine gum to 16, 12, and 5 pieces, respectively, while using 3, 7, and 14 pieces of placebo gum. During week 6, he used no nicotine gum intake and averaged 17 pieces of placebo gum per day. During week 7 the 19 pieces of gum he used were divided between placebo gum and bubble gum. By week 8 and at the six-month follow-up he was using only bubble gum. We confirmed th...