Send the following on WhatsApp
Continue to ChatThe current study is a preliminary,' first step' evaluation of a potential relationship between exhaustion and atrial fibrillation, it is purely an observational study -- it can not conclude a causal relationship, or even which direction such a relationship would go. - John Rumsfeld from https://whatsmyquote.com/quote/the-current-study-is-a-preliminary-first-step-evaluation-of-a-potential-relationship-between-exhaustion-and