TY - CONF T1 - Qualitative methods and patient and public involvement in trials: opportunities and pitfalls JO - Trials PY - 2015/11/16 AU - Hoddinott P AU - O'Cathain A AU - Boyer I AU - Oliver S ED - DO - DOI: 10.1186/1745-6215-16-s2-p75 PB - Springer Science and Business Media LLC VL - 16 IS - S2 Y2 - 2025/05/16 ER -