Greek hospital doctors went on a day-long strike on Tuesday and dozens marched in Athens to protest “suffocating” conditions at hospitals on the front-line of the coronavirus pandemic.

With around 6000 deaths, Greece has fared better than much of Europe in containing the pandemic and prevented its health service, battered by years of financial crisis, from collapsing.

But intensive care units at state hospitals are operating at roughly 80% capacity and doctors want the government to create new units for COVID-19 patients instead of using already existing ones.

“There is a serious risk both for critically ill COVID-19 patients and critically ill patients with other diseases,” the union of hospital doctors, OENGE, said in a statement.