https://www.pharmacompass.com/pdf/news/fda-confirms-paragraph-iv-patent-litigation-for-cupric-sulfate-magnesium-sulfate-selenious-acid-zinc-sulfate-injection-87595.pdf
16 Dec 2022
// FDA
https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm?event=overview.process&ApplNo=216324
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