Overall Survival of Patients With Pyruvate Kinase Deficiency in the UK: A Real‐World Study - Patrick Foy; Sara Higa; Jing Zhao; Karabo Keapoletswe; Lorena Cirneanu; Alessandra Venerus; Louise Raiteri; Erik Landfeldt; Eleonora Iob; Louise Lombard; Junlong Li; Erin Zagadailov (eJHaem)