[BMJ Publishing Group Ltd and British Thoracic Society British Thoracic Society Winter Meeting 2017, QEII Centre Broad Sanctuary Westminster London SW1P 3EE, 6 to 8 December 2017, Programme and Abstracts - ()] Complications of TB and extra-pulmonary TB - P3 The challenge of estimating tb mortality accurately: reconciling deaths reported in the tb notification system and the vital registration system in england and wales, 2005–2015