ABSTRACT
I. Introduction
II. Background
2.1 PBL Previous Research
2.2 HDS Trends
III. HDS Characterization
3.1 HDS Education Training
3.2 PBL Committee
IV. HDS Performance
4.1 Overview
4.2 Method
4.3 Analysis of HDS Achievement Index
V. Implications and Conclusions
5.1 Implications
5.2 Conclusion
References