From my ENT colleagues and for my ENT colleagues across the Tasman as of 31st March 2020. THINGS CHANGE ALL THE TIME, RAPIDLY. THIS ADVICE MAY BE INVALID IN A FEW DAYS.
Note the risk management of Aerosol-Generating Procedures and preoperative assessment. PLEASE CHECK YOUR OWN LOCAL GUIDELINES.
https://umbraco.surgeons.org/media/5148/nzsohns_ppe_letter-recommendations.pdf