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In China, laboratory instructors always arrange researchers to conduct experiments during the daytime, they can read or write articles at night or on the weekends in general. In addition, due to the seriousness of submission and review of the literature, a relatively good environment is required. Because the environment will be relatively quiet in the middle of the night and weekends, many Chinese researchers like to submit papers at these times.
No competing interests
23 December 2019
Spine Disease Research Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China