1. Department of Nursing, Jeju National University College of Nursing, Jeju, Korea.
2. University of Texas Health Science Center at Houston, School of Nursing, Houston, TX, USA.
3. Department of Internal Medicine, Wonkwang University School of Medicine & Hospital, Iksan, Korea.
4. Department of Internal Medicine, Jeju National University College of Medicine, Jeju, Korea.
5. Department of Urology, Jeju National University College of Medicine, Jeju, Korea.
6. Department of Preventive Medicine, Jeju National University College of Medicine, Jeju, Korea.
7. Doctoral Student, Seoul National University College of Nursing, Seoul, Korea.