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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1947 1
1950 2
1976 1
1980 1
2021 1
2022 0
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Hopper JJ Jr. Hopper JJ Jr. Nurse Pract. 1980 Jul-Aug;5(4):37-8. Nurse Pract. 1980. PMID: 7413112 No abstract available.
Mask adherence and rate of COVID-19 across the United States.
Fischer CB, Adrien N, Silguero JJ, Hopper JJ, Chowdhury AI, Werler MM. Fischer CB, et al. Among authors: hopper jj. PLoS One. 2021 Apr 14;16(4):e0249891. doi: 10.1371/journal.pone.0249891. eCollection 2021. PLoS One. 2021. PMID: 33852626 Free PMC article.