Gradual and immediate nicotine reduction result in similar low-dose nicotine self-administration.
Smith TT, Levin ME, Schassburger RL, Buffalari DM, Sved AF, Donny EC. Gradual and immediate nicotine reduction result in similar low-dose nicotine self-administration. Nicotine Tob Res. 2013 Nov; 15(11):1918-25.