I am a US Public Health Service epidemiologist assigned to the Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health. I will mainly be contributing to articles relating to epidemiology, public health and occupational health. When I do, I will be doing so on behalf of CDC/NIOSH. I also have a personal interest in philosophy, especially the philosophy of science and epistemology. When contributing to articles on philosophy, I will be doing so solely on my own behalf.