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Supporting Policy In health with Research: an Intervention Trial (SPIRIT)--protocol for a stepped wedge trialWilliamson, A.; Redman, S.; Haynes, A.; Barker, D.; Jorm, L.; Green, S.; Blyth, F.; Lewis, N.; Shakeshaft, A.; D'Este, C.; Redman, S.; Jorm, L.; Green, S.; D'Este, C.; Shakeshaft, A.; Davies, H.; Louviere, J.; Flynn, T.; Haines, M.; Milat, A.; O'Connor, D.; Thackway, S.; Blyth, F.; Carter, S.; Williamson, A.; Haynes, A.; Darsana, E.; McGrath, C.; Makkar, S.; Turner, T.; Lewis, N.; Campbell, D. · BMJ Open · 2014