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Martina Papponetti, 25, a nurse at the Humanitas Gavazzeni Hospital in Bergamo, Italy poses for a portrait at the end of her shift Friday, March 27, 2020. Their eyes are tired. Their cheekbones rubbed raw from protective masks. They don't smile. The doctors and nurses on the front lines of the coronavirus pandemic in Italy are almost unrecognizable behind their masks, scrubs, gloves and hairnets - the flimsy battle armor donned at the start of each shift as the only barrier to contagion. (AP Photo/Antonio Calanni)