The operational main body,fund source,information source and its assessment,service contents and forms of the major medical and health information service platforms for the public in United Kingdom,USA,Canada and Australia were compared and analyzed with suggestions put forward for establishing government-led non-profitable medical and health information service platforms,namely enlarging the depth and width of medical and health information service,promoting the assessment of information service on the platforms by the third party,enforcing the management of medical and health information service platforms,improving the interaction and feedback between website maintenance staff and users,and strengthening the construction of digital medical service system.

Hemodynamics is a branch of fluid mechanics, which mainly studies the physiological process of circulatory system from the perspective of mechanics, and has a wide range of applications in medicine. The entity teaching model is made to help medical students master the knowledge of hemodynamics more easily and intuitively by showing them the phenomenon of laminar flow, turbulence and axial concentration of red blood cells. And then we check their learning effect by questionnaires. Students are interested in the entity teaching model that the teacher has used in the class. Thus, the entity teaching model can play an important role in the teaching process.