Differences in treatment and survival of older patients with operable breast cancer between the United Kingdom and the Netherlands – a comparison of two national prospective longitudinal multi-centre cohort studies. (December 2021) - van der Plas-Krijgsman, W.; Morgan, J.; de Glas, N.; de Boer, A.; Martin, C.; Holmes, G.; Ward, S.; Chater, T.; Reed, M.; Merkus, J.; van Dalen, T.; Vulink, A.; et al.