A Randomized Controlled Trial on Smoking Cessation and Adherence Intervention on Patients With Erectile Dysfunction

Inclusion Criteria: * Male ethnic Chinese aged 18 or above * Smokes at least 1 cigarette per day * Is not following other forms of smoking cessation interventions * Intends to quit smoking within the next 7 days of the first contact and would use NRT * Free from illness that contraindicate to the use of NRT * Has signed an informed consent form, or has given verbal consent (for those contacted by telephone) Exclusion Criteria: * Patients who are psychologically or physically unable to communicate * Children and teenagers (aged below 18) * Those on regular psychotropic medications and in the presence of any serious health problems that may make them unsuitable for using NRT, such as recent stroke, palpitation, or other life threatening conditions