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. Author manuscript; available in PMC: 2018 Jun 22.
Published in final edited form as: Vaccine. 2017 May 27;35(29):3621–3638. doi: 10.1016/j.vaccine.2017.05.052

A3.

Twitter data via ChatterGrabber

n
Total number of collected tweets 26389
Number of unique urls 8416
Number of unique domains 2372
Number of web articles selected for analysis 50