Health-care workers and facilities in Ukraine must be protected - McCarthy, Sally; Henderson, Katherine; Skinner, Clare; Arreola, Luis Daniel Sánchez; Ng, Chip-Jin; Jamil, Aus N; Van de Voorde, Patrick; Cevik, Arif Alper; von Schickfus, Michael; Santos, Richard; Jakubaszko, Juliusz; Bognar, Zsolt; et al. (The Lancet (British edition), 2022)