2.2 Data collection
In this study data were collected via comprehensive face to face interviews and also medical chart reviews. For interview, we designed an interview form consisting of three separated parts. In the first part age, sex, marital status, place of residence and educational level of patients were collected as demographic information. The second part included the common name of herbal medicines which patients used them in oral route during chemotherapy courses. In the last part of the interview form, common side effects of chemotherapy such as constipation and diarrhea, nausea and vomiting, pain, skin and oral lesions were asked. In this part, the status of other comorbidity illnesses was recorded. The first author interviewed all patients in waiting rooms of clinics before the start of chemotherapy course or after its completion. Other clinical information was obtained through medical chart review. The cancer site, clinical stage, metastatic status and recurrence status were in clinical information category. To protect patients’ privacy, this part of the data collection was done by the staff of the oncology clinics.