Norway’s Crown Princess Mette-Marit has undergone a successful lung transplant and is recovering from the procedure, the royal household said in a statement on Wednesday. The 52-year-old wife of Crown Prince Haakon, the heir to the Norwegian throne, was diagnosed with pulmonary fibrosis in 2018, a chronic disease that causes scarring in the lungs and leads to a reduced oxygen uptake. The hospital said the transplant had “so far” been successful, in a statement provided by the palace, but...