IntroductionThe rapid advance of information technology since the end of twentieth century has deeply influenced the ways people gather health information to use as references for their medical decision-making. Accordingly, conversation is the core of SDM, and patients are encouraged to play a more active role as compared to the traditional paternalistic physician-patient relationship of the past. Since patients started to take an active role in medical decision-making, SDM has been frequently suggested for physician-patient relationship in teaching and research activities. As compared to the two extremes in medical decision-making-paternalism (i.e. physicians make the decision and patients play a passive role) and individual autonomy (i.e. patients make the decision and physicians play a passive role), SDM is usually regarded as the intermediate position which not only advocates that patients' active participation in medical decision-making be respected, but also that the physicians' responsibility in decisionmaking process be required [4][5][6].Patients' participation in medical decision-making has been increasing over time [7]. Widely available modern information technology has dramatically changed peoples' access to medical information, shifting access from non-interactive and traditional media, such as newspaper, magazine, television, radio and so on, to that of the interactive, web-2.0 internet-based social media such as Facebook, Twitter, WhatsApp, LINE and the like. Studies have overwhelmingly pointed out the association between health information in the media [12][13][14] and the usage of medical treatments and interventions, not only in the intensive and critical care medical encounters [15], but also in those of ambulatory care [16].Given that online health information indeed changes people's medical decision-making [17], incorrect online health information can result in a heavy burden in medical encounters