Lockdown COVID‑19: a stress test revealing more about the mental health system than psychopathology-A comparative analysis between Austria, Germany, and Italy. - de Bertoldi F; Finos L; Roux P; Gaspari D; Di Pauli J; Ullrich H; Benedetti N; Bizzarri J; Neugebauer J; Peter Plum P; Nitti M; Conca A (Frontiers in public health, 2026)