1. Pak HN, Kim YH, Sun K, Lee HS, Park Y, Hwang GS, Kim JW, Lim HE, Lee HJ, Lee SJ, Seo HS, Shim WJ, Oh DJ, Ro YM. The effects of action potential duration on action potential duration restitution kinetics on initiation and maintenance of ventricular fibrillation. Korea Circulation J 1999 (abstract)

2. Kim KJ, Seo HS, Lim HE, Shin SH, Pak HN, Hwang GS, Lee EM, Ahn JC, Kim Y-H, Shim WJ, Oh DJ, Ro YM. Platelet activity in acute coronary syndrome. Korea Circulation J 1999 (abstract)

3. Lim HE, Kim Y-H, Shin SH, Lee HJ, Kim BS, Pak HN, Lee SJ, Hwang GS, Seo HS, Shim WJ, Oh DJ, Ro YM. Incidence of Organized Activation during Chronic Atrial Fibrillation is Related to Electrical Remodeling and Predicts the Efficacy of Electrical Cardioversion. Korea Circulation J 1999 (abstract)

4. Park SM, Seo HS, Park CG, Lee IS, Pak JH, Kim YH, Lim HE, Shin SH, Ahn JC, Oh DJ, Ro YM. Assessment of the Arterial Stiffness Index as a Clinical Parameter for Atherosclerotic Coronary Artery Disease. Korea Circulation J 2003 (abstract)

5. Shin SH, Oh DJ, Seo SY, Lim HE, Park SM, Kim EJ, Lee SJ, Ahn JC, Park CG, Seo HS, Ro YM. Disseminated intravascular inflammation in acute myocardial infarction. Korea Circulation J 2003 (abstract)

6. Lim HE, Park CG, Yong HS, Seo SY, Park SM, Shin SH, Ahn JC, Seo HS, Oh DJ, Ro YM. Early Assessment of Myocardial Contractility by Contrast-Enhanced Magnetic Resonance Imaging After Revascularization of Acute Myocardial Infarction. Korea Circulation J 2003 (abstract)

7. Lim HE, Kim Y-H, Fang YH, Seo SY, Shin SH, Park MY, Pak HN, Song WH, Sun K, Shim WJ, Ro YM. Driving Mechanisms of Acutely Onset of Canine Atrial Fibrillation Under the Vagal Stimulation. Korea Circulation J 2004 (abstract)

8. Pak HN, Kim Y-H, Lim HE, Lee HS, Koh KJ, Ahn JC, Ro YM. Significance of Unipolar Electorgram Morphology at the Earliest Activation Site in Ventricular Tachycardia Originated From Right Ventricular Outflow Tract. Korea Circulation J 2004 (abstract)

9. Lim HE, Kim Y-H, Lee HS, Seo SY, Shin SH, Park MY, Pak HN, Song WH, Shim WJ, Ro YM. Radiofrequency Catheter Ablation of Hemodynamically Unstable Ventricular Tachycardia. Korea Circulation J 2004 (abstract)

10. Kim Y-H, Lim HE, Pak HN, Lee HS, Koh KJ, Jin JH, Shin SH, Park MY, Shim WJ, Chun Hwang, Ro YM. Recurrence of Atrial Fibrillation After Initially Successful Pulmonary Vein Isolation. Korea Circulation J 2004 (abstract)

11. Pak HN, Kim YH, Lim HE, Shin SH, Park MY, Ahn JC, Shim WJ, RO YM. Characteristic of Focal Atrial Tachycardia Arising From Crista Terminalis or Coronary Sinus Musculature With Multiple Activation Sequences. Korea Circulation J 2004 (abstract)

12. Lim HE, Kim Y-H, Lee HS, Seo SY, Park MY, Pak HN, Song WH, Chun Hwang, Shim WJ, Ro YM. Significance of Atrial Flutter After Catheter Ablation of Atrial Fibrillation. Korea Circulation J 2004 (abstract)

13. Koh KJ, Kim Y-H, Lim HE, Lee HS, Jin JH, Pak HN, Ro YM. The factors on the development of atrial fibrillation after permanent pacemaker implantation in sinus node dysfunction. Korea Circulation J 2004 (abstract)

14. Shin SH, Pak HN, Lim HE, Pakr MY, Ahn JC, Song WH, Lim DS, Shim WJ, Ro YM, Kim Y-H. Anatomical and Clinical Significance of Cardiac Veins Human. Korea Circulation J 2004 (abstract)

15. Pak HN, Kim Y-H, Lim HE, Shin SH, Ahn JC, Ro YM. Clinical Significance and Spatiotemporal Characteristics of Frequency Spectrum During Atrial Fibrillation in Human. Korea Circulation J 2004 (abstract)

16. Jin JH, Koh KJ, Ji WJ, Lee HS, Lim HE, Shin SH, Park MY, Pak HN, Lim DS, Shim WJ, Ro YM, Kim Y-H. Comparison Between One-touch Type Capillary (proTime) and Venous Plasma Sampling Method of Porthrombin Time Assay for Monitoring Anticoagulart Therapy. Korea Circulation J 2004 (abstract)

17. Lee HS, Koh KJ, Jin JH, kang JW, Lee YW, Kim HJ, Shin SH, Lim HE, Pak HN, Ro YM, Kim YH. The comparison of the inducibility of ventricular tachyarrhythmias according to the methods of programmed ventricular stimulation. Korea Circulation J 2004 (abstract)

18. Koh KJ, Pak HN, Lee HS, Lim HE, Jin JH, Kang JW, Ro YM, Kim Y-H. The anatomical characteristics and clinical significance of iliofemoral vein. Korea Circulation J 2004 (abstract)

19. Park MY, Shim WJ, Shin SH, Lim HE, Pak HN, Ahn JC, Song WH, Lim DS, Kim Y-H, Ro YM. Prognostic Implication of Functional Reserve of Atrium after Cardioversion of Atrial Fibrillation. Korea Circulation J 2004 (abstract)

20. Lim HE, Pak HN, Kim JS, Wang YS, Ko KJ, Jin JH, Lee HS, Ro YM, Kim YH. Real-time Esophagogram during Catheter Ablation for Atrial Fibrillaiton. 49th Annual Scientific Meeting of The Korean Society of Circulation, 2005.

21. Lim HE, Pak HN, Kim JS, Ko KJ, Jin JH, Lee HS, Ro YM, Kim YH. Clinical Outcome of Catheter Ablation in Patients with Tachycardia-bradycardia Syndrome Related to Atrial Fibrillaiton. 49th Annual Scientific Meeting of The Korean Society of Circulation, 2005.

22. Lim HE, Pak HN, Kim JS, Ko KJ, Jin JH, Lee HS, Ro YM, Kim YH. Clinical Usefulness of Inducibility of Atrial Tachyarrhythmias as Predictor of Long-term Outcome of Catheter Ablation for Atrial Fibrillaiton. 49th Annual Scientific Meeting of The Korean Society of Circulation, 2005.

23. Kim JS, Pak HN, Lim HE, Huh YJ, Kim JB, Kim JY, Ro YM, Kim YH. Response of Pulmonary Vein Potentials to Extrastimulation can Predict Arrhythmogenic Pulmonary Vein in Patients with Paroxysmal Atrial Fibrillation. 49th Annual Scientific Meeting of The Korean Society of Circulation, 2005.

24. Pak HN, Kim YH, Lim HE, Chou CC, Miyauchi Y, Bang YH, Sun K, Hwang C, Chen PS. Reentrant Wavefronts Anchoring to the Papillary Muscle During Ventricular Fibrillation in Open Chest Swine and Dogs. 49th Annual Scientific Meeting of The Korean Society of Circulation, 2005.

25. Pak HN, Kim KI, Lim HE, Kim JS, Bang YH, Sun K, Yu JY, Kim BS, Kim YH. Human Mesenchymal Stem Cell Transplantation in Canine Myocardial Infarction Model Results in Proarrhythmia without Immune Rejection. 49th Annual Scientific Meeting of The Korean Society of Circulation, 2005.

26. Lee HS, Ko KJ, Jin JH, Lee YW, Kim HJ, Lee YJ, Kang JW, Kim JS, Lim HE, Pak HN, Ro YM, Kim YH. 방실결절 회귀성 빈맥 유도법의 하나로 S1-S6의 유용성. 49th Annual Scientific Meeting of The Korean Society of Circulation, 2005.

27. Pak HN, Lim HE, Kim JS, Jin SH, Shin SH, Park MY, Ro YM, Kim YH. Electrophysiologic Significances of Purkinje Potential and Preferential Conduction in Patients with Idiopathic Left Ventricular Tachycardia Identified by Non-contact Mapping. 49th Annual Scientific Meeting of The Korean Society of Circulation, 2005.

28. Pak HN, Lim HE, Kim JS, Lee HS, Ko KJ, Shin SH, Park MY, Ro YM, Kim YH. Efficiency and Electrophysiologic Characteristics of Antral Ablation vs. Circumferential Ostial Ablation of Atrial Fibrillation. 49th Annual Scientific Meeting of The Korean Society of Circulation, 2005.

29. Ko KJ, Wang YS, Lee HS, Jin JH, Pak HN, Lim HE, Kim JS, Shin SH, Park MY, Ro YM, Kim YH. P-wave Characteristics of Atrial Septal Pacing vs. Right Atrial Appendage Pacing and Their Effect on the Occurrence of Atrial Fibrillation. 49th Annual Scientific Meeting of The Korean Society of Circulation, 2005.

30. Kim JS, Pak HN, Lim HE, Shin SH, Park MY, Ro YM, Kim YH. Initial Preceding Diastolic Interval and the Initiation of Sustained Ventricular Tachycardia During Programmed Ventricular Stimulation in Human. 49th Annual Scientific Meeting of The Korean Society of Circulation, 2005.

31. Park MY, Kim YH, Kim JS, Shin SH, Lim HE, Hong SJ, Park HN, Lim DS, Shim WJ, Ro YM. Effect of Acute Amiodarone Infusion on Electrical Cardioversion of Chronic Atrial Fibrillation in Whom Initial Attempt was Failed. 49th Annual Scientific Meeting of The Korean Society of Circulation, 2005.