Reports of recovery from serious illness caused by the coronavirus have been trickling in from around the world.Physicians are swapping anecdotes on social media: a 38-year-old man who went home after three weeks at the Cleveland Clinic, including 10 days in intensive care. A 93-year-old woman in New Orleans whose breathing tube was removed, successfully, after three days. A patient at Massachusetts General Hospital who was taken off a ventilator after five days and was doing well.“Patients are definitely recovering from Covid-19 ARDS and coming off vents,” Dr. Theodore “Jack” Iwashyna, a prof...