. 2020 Sep 2;22(9):e18662. doi: 10.2196/18662
©Shin Hasegawa, Teppei Suzuki, Ayako Yagahara, Reiko Kanda, Tatsuo Aono, Kazuaki Yajima, Katsuhiko Ogasawara. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 02.09.2020.
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Figure 2.
The number of tweets by the minute on March 11, 2011.