@misc{7620,
  author = {M. Gulliford and J. Charlton and O. Boiko and J. Winter and E. Rezel-Potts and X. Sun and C. Burgess and L. McDermott and C. Bunce and J. Shearer and V. Curcin and R. Fox and A. Hay and P. Little and M. Moore and M. Ashworth},
  title = {Health Services and Delivery Research},
  year = {2021},
  publisher = {NIHR Journals Library Copyright   2021 Gulliford et al. This work was produced by Gulliford et al. under the terms of a commissioning contract issued by the Secretary of State for Health and Social Care. This is an Open Access publication distributed und},
  address = {Southampton (UK)},
  doi = {10.3310/hsdr09090},
}