Developing a standardised approach to the aggregation of inpatient episodes into person-based spells in all specialties and psychiatric specialties. - Sarah Rees; Ashley Akbari; Huw Collins; Sze Chim Lee; Amanda Marchant; Arfon Rees; Daniel S. Thayer; Ting Wang 041; Sophie Wood; Ann John (BMC Medical Informatics Decis. Mak., 2019)