(1) Professional journals are the source of PI, collecting PI and storing information in various ways;
(2) Establish a computer consulting service system to store information and solve practical clinical problems;
(3) Academic conferences, activities and continuing education lectures are also ways to obtain PI;
(4) Go deep into the clinic and learn from doctors and nurses with an open mind.
In short, to collect and obtain drug information, we should often read professional journals, use computers most conveniently, attend academic conferences, and practice more in clinical communication.