American Society of Hematology disorders of the hematopoietic, hemostatic, and lymphatic systems, and disorders of the interaction between blood and the blood vessel wall. An American hematologist has trained in a subspecialty program approved by the American Board of Internal Medicine or the American Board of Pediatrics, or has acquired a comparable education in the field by alternate means, and is Board Certified (or eligible) in the subspecialty of hematology. Diagnostic expertise of a hematologist A hematologist is expert in the investigation, diagnosis, and management of disorders of the aforementioned organ systems through the use of the medical history, physical findings, specialized clinical laboratory
Philosophy of medicine causal relationships, whereas observational studies do not. In this instance, causation can be considered as something which is counterfactually dependent, i.e. the way RCTs differ from observational studies is that they have a comparison group in which the intervention of interest is not given. At least two different causal paradigms in biomedicine have been identified – the Humean, linear, mono-factorial paradigm championed mainly in clinical medicine; and the non-linear, reciprocal, multi-factorial paradigm invoked in epidemiology. Philosophy of medicine The philosophy of medicine is a branch of philosophy that includes the epistemology, ontology/metaphysics, and ethics of medicine. Perhaps the most well