"Hydroxychloroquine, chloroquine linked to increased risk of death in hospitalized coronavirus patients, study finds"

https://www.foxnews.com/health/hydroxychloroquine-chloroquine-linked-to-increased-risk-of-death-in-hospitalized-coronavirus-patients-study-finds

Can we please get this addressed.

Does it only increase heart problems in people with previous heart issues, known or unknown?

Did it SEEM to affect people because they had underlying conditions that would exacerbate the side effects of the drugs?

Does it depend on what is mixed in with the tablet?

https://eyewire.news/articles/sun-pharmaceutical-donates-2-5-million-hydroxychloroquine-sulfate-tablets-in-the-us-for-potential-covid-19-treatment/