2. The Chinese Journal of Gastroenterology is an academic journal of gastroenterology sponsored by Zhengzhou University, which is open for soliciting contributions at home and abroad. This is a monthly magazine, printed on A4 coated paper. It is the statistical source periodical of scientific papers in China (the core periodical of science and technology in China). It mainly includes original research, research letters, experience exchange, short stories, advanced experiences and lessons, introduction and evaluation of new drugs, clinical and pathological discussions, meeting minutes, literature review, academic trends at home and abroad, etc.

3. China Institute of Science and Technology Information published "Statistical Source Journals of China Sci-tech Papers", also known as "China Sci-tech Core Journals", which mainly belongs to the field of natural science and is a relatively recognized catalogue of sci-tech statistical source journals in China at present. Entrusted by the Ministry of Science and Technology, its authority ranks first in China.