2017-An alternative to RCTs in the case of sample heterogeneity Posted on November 13, 2017 by Thomas Strayer 2017 Fredericks, S., Lapum, J. and Policelli, J. An alternative to RCTs in the case of sample heterogeneity British Journal of Cardiac Nursing https://doi.org/10.12968/bjca.2017.12.11.532