Another thing about all these last effects . 99.5% of current cases are described as mild , these people are recovering at home on their own or with help from friends and family and no before and after data is being collected about them.
If you have a "mild" you get sent home and no one ever speaks to you again. So , when there is some study of 34 people who had heart damage , remember they are probably people who are severely ill and in the hospital or already had heart scans for some reason , probably a pre existing condition. No one who doesn't have a heart problem already gets these scans , no public or for profit health care system budgets for those tests for people that are healthy.
It also should be noted , people who are healthy stay that way but avoiding hospitals as a rule unless they get laid low by something.