Health or Medical Informatics is the "scientific field that deals with biomedical information, data, and knowledge - their storage, retrieval, and optimal use for problem solving and decision making. It accordingly touches on all basic and applied fields in biomedical science and is closely tied to modern information technologies, notably in the areas of computing and communication (medical computer science)"
[Stanford Medical Informatics].
"Medical information science is the science of using system-analytic tools . . . to develop procedures (algorithms) for management, process control, decision making and scientific analysis of medical knowledge."
[Shortliffe EH. The Science of Biomedical Computing. Med Inform 1984; 9:185-93.]
"Medical Informatics comprises the theoretical and practical aspects of information processing and communication, based on knowledge and experience derived from processes in medicine and health care."
[Van Bemmel JH. The Structure of Medical Informatics. Med Inform 1984; 9:175-80.]
"The rational study of the way we think about patients, and the way that treatments are defined, selected and evolved. It is the study of how medical knowledge is created, shaped, shared and applied."

[Enrico Coiera )