House physician: primary title, practice under the guidance and supervision of the attending physician or above.
Attending physician: middle job title, higher than the house physician, lower than the assistant director physician.
Assistant director physician: vice-senior title, equivalent to associate professor, higher than the attending physician, lower than the director physician.
Director physician: senior title, equivalent to professor.
In China, all hospitals are classified into 3 levels: primary, secondary, and tertiary [26 ]. Primary hospitals (primary level, < 100 beds normally) aim to provide basic public health services and consulting for their residents. Secondary (moderate level, 101–500 beds normally) and tertiary (high level, ≥ 500 beds normally) hospitals provide specialized care. In addition, the tertiary hospitals could be divided to academic tertiary hospitals and non-academic tertiary hospitals. Clinicians working in academic tertiary hospitals have duty of conducting clinical/basic research, teaching and tutoring in addition to daily clinical work.