Hyung Seok Lee

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OBJECTIVES The Web-based integrated public healthcare information system (PHIS) of Korea was planned and developed from 2005 to 2010, and it is being used in 3,501 regional health organizations. This paper introduces and discusses development and performance of the system. METHODS We reviewed and examined documents about the development process and(More)
We have developed a modified optical frequency domain imaging (OFDI) system that performs parallel imaging of three-dimensional (3D) surface profiles by using the space division multiplexing (SDM) method with dual-area swept sourced beams. We have also demonstrated that 3D surface information for two different areas could be well obtained in a same time(More)
PURPOSE An epidemiological study of myasthenia gravis (MG) has not been performed in Korea. The purpose of this study was to estimate the prevalence and incidence of MG in Korea. MATERIALS AND METHODS Health Insurance Review and Assessment (HIRA) data from 2010 to 2014 were searched for MG codes as defined by the International Classification of Diseases,(More)
The objective of this study was to investigate the clinical and genetic features of Korean patients with facioscapulohumeral muscular dystrophy type 1 (FSHD), and assessed the impact of molecular defects on phenotypic expression. We enrolled 104 FSHD patients from 87 unrelated Korean families with D4Z4 repeat array of less than 11 copies on 4q35. Sixty-one(More)
Isolated middle cerebral artery (MCA) stenosis in young patients with no other medical condition may be a unique pathologic entity with a benign long-term course. Generally, moyamoya disease shows a progression of stenosis from internal cerebral artery (ICA) to other intracranial vessel. A 26-year-old woman was admitted for choreic movements of the right(More)
Postprandial hypotension (PPH) has not been described as a cause of hypotension after the return of spontaneous circulation (ROSC) in the intensive care unit (ICU). A 74 year old man underwent cardiopulmonary resuscitation (CPR) due to monomorphic ventricular tachycardia. After the ROSC, inotropic agents were not reduced but increased. PPH had occurred,(More)
The purpose of this paper is to verify the relationships among service quality, perceived value, customer satisfaction, and customer loyalty in mobile phone service. The study conducted an empirical research. A total of 384 mobile phone users' responses were collected from Seoul in Korea. The findings show that service quality positively influences customer(More)
He headed Campus Computing Center of the University and also directly involved in e-learning diffusion for the campus. His previous experiences include central bank, finance ministry, and teaching in the U.S. His research areas include database, business intelligence, and management. Abstract Over the past few years, many higher educational institutions(More)