TY - CHAP T1 - The protocol T2 - HOW TO DESIGN, ANALYSE AND REPORT CLUSTER RANDOMISED TRIALS IN MEDICINE AND HEALTH RELATED RESEARCH PY - 2014/01/01 AU - Campbell MJ AU - Walters SJ ED - SN - 978-1-119-99202-8 SP - 143 EP - 158 Y2 - 2025/01/13 ER -