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. Author manuscript; available in PMC: 2022 Jul 5.
Published in final edited form as: JCOM J Sci Commun. 2021 Jun 14;20(4):A03. doi: 10.22323/2.20040203

Table 1. Approximate age and presumed gender of the 81 focal youth (31 NHM London, 28 NHM Los Angeles County, 22 California Academy of Sciences) observed.

Gender 5–10 years (elementary school-age) 11–15 years (middle school-age) 15–19 years (high school-age) Total
Female 20 11 9 40
Male 23 9 8 40
Unknown 1 0 0 1
Total 44 20 17 81