Kawadler, J. M., Slee, A., Stotesbury, H., Koelbel, M., Balfour, P., Saunders, D. E., Rees, D., Howard, J., Inusa, B., Pelidis, M., Kesse‐Adu, R., Chakravorty, S., Awogbade, M., Clark, C. A., Kirkham, F. J., & Liossi, C. (2019). index of Pain Experience in Sickle Cell Anaemia (IPESCA): development from daily pain diaries and initial findings from use with children and adults with sickle cell anaemia. British journal of haematology, 186, 360–363. http://access.bl.uk/ark:/81055/vdc_100088857378.0x00005c