Fig. 1
Helping HAND 4 study design. IVRÂ interactive voice response, QLÂ quitline, TXTÂ text, EHRÂ electronic health record, NRTÂ nicotine replacement therapy
Fig. 1 | Trials
Helping HAND 4 study design. IVRÂ interactive voice response, QLÂ quitline, TXTÂ text, EHRÂ electronic health record, NRTÂ nicotine replacement therapy
Trials