Table 1.

Interview guide.

Topic	Main question	Probe
Introduction	Interviewers will state the purpose and notice of this interview to interviewees and create a comfortable atmosphere prior to the full-scale theme and aim to identify the interviewee's profileGreetings, words of appreciation, and reminders (e.g., to turn off the mobile phones)Introduction of researchersExplanation of the purpose of the interviewExplanation of how to proceed
Warm-up questions (demographic characteristics)	Overview of KM treatment for obesity“Please tell us about the counselling for patients with obesity currently being done in KM clinics.”Status of obesity care, number of patients, consultation period, etc.“How important is counselling in treatment outcomes and prognosis of weight loss?”
Main questions	Core contents of KM counseling for weight loss“What is the purpose of counselling?”“What should be the first approach in counselling?”“Compared to other obesity specialists such as dietitians and exercise therapists, what makes KM counselling different?”“How important is pattern identification in counselling for weight loss?”“How important is Sasang constitution is in counselling for weight loss?”	Personal experience
Additional questions	Questions about the manual for standard counseling for patients with obesity in KM“What is the purpose of the manual?”“In what areas would it be helpful to use the manual?”“How would you like the manual to be improved to reflect the characteristics of KM counselling?”“How could the manual be improved to reflect the reality of the treatment?”
Ending	Future direction of counseling for weight loss in KM1. “What if the National Health Insurance covers KM standard counselling?”2. How would it impact the KM industry and the nation if all the KMDs had standardized counselling?”