Study Design
The patients who admitted to smoking cessation outpatient clinics of Izmir Metropolitan Municipality Eşrefpaşa Hospital and Health University Okmeydanı Training and Research Hospital were included in study between January 2018 and March 2020, prospectively.
The study was approved by the local ethics committee with the number of 2011-KAEK-42 2018703-01 and all patients participating in the study filled the informed consent form.