Procalcitonin Values Fail to Track the Presence of Secondary Bacterial Infections in COVID-19 ICU Patients oleh Elsa Harte, Sharuha Kumarasamysarma, Benjamin Phillips, Olivia Mackay, Zohra Rashid, Natalya Malikova, Abdullah Mukit, Saraswathi Ramachandran, Anna Biju, Kate Brown, Rosie Watts, Charlie Hodges, William Tuckwell, Nick Wetherall, Henry Breen, Shannon Price, Tamas Szakmany