Name of Reference Style with Superscript Square Brackets

Can someone tell me the name of this referencing style please?

In-Text:
Notably,thyroid-stimulating hormone levels peak in winter and dip in summer, exhibiting a negative correlation with temperature. [16] Superscript

[16] Yoshimoto H, Yamakawa K, Umemura Y, et al. Seasonal variation and severity of acute abdomen in Japan: a nine-year retrospective analysis. J Pers Med. 2021;11:1346.

Journal: https://journals.lww.com/md-journal/pages/default.aspx
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