Jae Hoon Choi

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BACKGROUND Free flap surgery for head and neck defects has gained popularity as an advanced microvascular surgical technique. The aims of this study are first, to determine whether the known risk factors such as comorbidity, tobacco use, obesity, and radiation increase the complications of a free flap transfer, and second, to identify the incidence of(More)
After skin grafting, to prevent hematoma or seroma collection at the graft site, a tie-over dressing has been commonly used. However, although the conventional tie-over dressing by suture is a useful method for securing a graft site, refixation is difficult when repeated tie-over dressing is needed. Therefore, we recommend a redoable tie-over dressing(More)
Wikis are interactive Web 2.0 tools that enable collaboration and knowledge sharing. Wiki-enabled collaboration is ideal in an educational setting, yet is prone to free-riding. This study examined the impact of the relational social capital of undergraduate students on their wiki usage and free-riding in a group project. Preliminary findings reveal that(More)
Social network sites (SNSs) have attracted millions of users who interact with each other and with companies. However, few studies have examined the impact of knowledge sharing through electronic word of mouth (eWOM) in the context of SNSs. This paper investigates the relationship among the use of SNSs, users' social capital, knowledge sharing, and eWOM.(More)