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. 2023 Jun 14;16:1999–2013. doi: 10.2147/JPR.S416142

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© 2023 Yu et al.

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Statistical chart of the top 20 countries in terms of number of articles published on analgesia in childbirth.

Notes: (A) Shows the number of articles issued by each country in different years. (B) shows the partnership of articles issued by each country, the larger the area of the dot means more partnership.