TY - JOUR T1 - Variation in the delivery of telephone advice by emergency medical services: a qualitative study in three services JO - BMJ Quality & Safety UR - https://eprints.whiterose.ac.uk/id/eprint/138288 PY - 2019/06/19 AU - O'Hara RA AU - Bishop-Edwards L AU - Knowles E AU - O'Cathain A ED - DO - DOI: 10.1136/bmjqs-2018-008330 PB - BMJ Publishing Group VL - 28 IS - 7 SP - 556 EP - 563 Y2 - 2025/11/02 ER -