There is currently a global pandemic in place caused by the SARS-CoV-2 virus which is responsible for the disease COVID-19. There is a huge amount of anxiety regarding this illness, and a fair number of questions being asked.
However, there are no data from controlled trials regarding treatment, and much advice is based on clinical experience.
Do we still need to limit answers so that they all need a published reference in this current situation? Remember also that clinical experience is still evidence, just the lowest form of evidence.
Another possibility is to give a preliminary answer with the caveat that the answer is subject to more data when it becomes available.