Hi Fernando, I'd vote for the second. In my experience, I'd say it is pretty conventional to note the broadcast or engagement format first (e.g. live, pre-recorded,etc). Think "live broadcast", "pre-recorded online lecture", "live public address" etc. Then follows the medium (online, tv, radio etc) and so on. One final thing, when you say, "by leading physicians...", are physicians the one putting it on? Or are they simply delivering the presentations, lectures etc?

They're all good, but my own preference is the 3rd