TY - CHAP T1 - Combining Qualitative and Quantitative Methods T2 - Qualitative Research in Health Care Third Edition PY - 2007/11/26 AU - O'Cathain A AU - Thomas K ED - DO - DOI: 10.1002/9780470750841.ch9 SP - 102 EP - 111 Y2 - 2025/11/02 ER -