No, no data. Small sample size studies with no relevant data as far as pre existing conditions, treatment protocol, disease progression, or peer review. Plus, none ever have any supporting information to put the information into perspective with regards to other viral and bacterial illnesses. Shoddy studies like these would never had been made public before this 24-7 news cycle we have today.
The power of observation and critical thinking seems to have left a large segment of the population. Per CDC estimates, there have been 5-million confirmed cases in the US with a probable 11x more undiagnosed. The five most populous states in the US have already encountered the first and second waves of the disease. Almost 20% of the entire population. If long term effects were a huge factor, wouldn’t general practitioners, pulmonary doctors, and cardiologists be getting slammed with follow up complaints? Wouldn’t hospitals be running at excess capacity? But they are not...
Heck, according to CDC surveillance data on Covid Like Illness (CLI), Pneumonia Like Illness (PLI), and Influenza Like Illness (ILI), the country as a whole is at half of the typical 2.4% visit baseline seen in years past.