Fighters in Ukraine: Voluntary, but also helpful?

Infected by research: Voluntary infection with Sars-CoV-2 – Health

France proceeded to the “voluntary departure” of 5,000 foreigners in 2021

Sylt: Incidences of over 1500 force companies to take a voluntary break

Donald Trump: Panel on the Capitol attack demands voluntary testimony from TV presenter Hannity

Fight against corona: tests and voluntary vaccination should break the fourth wave

Haitian voluntary migrants repatriated to Port-au-Prince

Has the crisis led to an explosion in voluntary departures from companies?

“Voluntary” fire in a nursery school