March 20 (Reuters) - Sonic Healthcare Ltd SHL.AX :
* IS WITHDRAWING EARNINGS GUIDANCE FOR FY 2020 DUE TO LEVEL OF UNCERTAINTY RESULTING FROM COVID-19
* HAS ALMOST A$1 BILLION OF CASH
* POPULATIONS IN CO'S MARKETS SELF-ISOLATE OR ARE QUARANTINED, SEES DIAGNOSTIC TESTING VOLUMES TO BE IMPACTED IN SHORT TO MEDIUM TERM