Earlier publications highlighted the benefits of uni-directional fibres and of mechanical substrate strengthening.
Ogbogu et al. and Ritchie et al. in their publications highlighted the importance of strengthening the capacity of NGOs to influence relevant government policies and practice [ 21, 22].
Previous publications highlighted the variable labelling of valve sizes and also reported a difference in the inner diameter of size-matched prostheses up to 2 mm [ 19, 20].
However, more recent publications highlighted the role played by computerised systems in the occurrence of other types of errors, demonstrating computers to be only a part of the ongoing process aimed to improve patient safety [ 27- 29].
This included pooling of budgets [ 11] and outsourcing training/tuition [ 9]. 3. Effective use and outcomes Several publications highlighted the need for wheelchairs to be useable in all places required in order to maximise effectiveness [ 8, 12, 15].
Recent publications highlighted the lack of pRb in basal-like breast cancer tissue [ 36] and observed that pRb depletion can result in the characteristic epithelial-to-mesenchymal transition changes seen in some breast cancer specimens [ 37], recapitulating our in vitro observations.
