Enhancing patient safety and other dimensions of the quality of healthcare needs change at all four levels of the healthcare system: (1) the understanding of patients during their connections with individual clinicians; (2) the working of small units (microsystems) of care delivery such as surgical teams or nursing units; (3) the practices of healthcare organizations that house the microsystems; and (4) the environments of strategy, payment, rules, accreditation, and other external factors to the real delivery of care that shape the context in which healthcare organizations deliver care
I would strongly recommend that you serach for the Clinical Human Factors Group website as this is the thinktank behind safety culture in the UK NHS. Also, look for PharmaHuF on Linked In which concerns pharmaceutical human factors