A medical oxygen cylinder, for usage in case of a power outage, stands next to the wardrobe of Jose Maria Casais, 69, who uses a portable oxygen concentrator respiratory machine to breathe, in Barcelona, Spain, December 14, 2022. REUTERS/Nacho Doce
A medical oxygen cylinder, for usage in case of a power outage, stands next to the wardrobe of Jose Maria Casais, 69, who uses a portable oxygen concentrator respiratory machine to breathe, in Barcelona, Spain, December 14, 2022. REUTERS/Nacho Doce