A spokeswoman for Mandeep R Mehra, the Harvard professor who was the paper's lead author, said on Friday that the study's authors had asked for an independent academic review and audit of their work.
The scientists said these drugs should not be used to treat Covid-19 patients outside of clinical trials until results from randomised clinical trials are available to confirm their safety
Long working hours have also been shown to increase likelihood of smoking, excessive drinking, and weight gain
Group calls for excluding food industry from policy formation