Why are standards needed in health informatics?

How do i know when i have a stress headache? what are the symptoms?

Investigator a has biological specimens that are coded and linked to identifiers of the source individuals. investigator a provides the specimens to investigator b but does not provide the individual identifiers. investigator b agrees not to re-identify the source individuals. is investigator b's research using the biospecimens human subjects research according to the definition of human subjects research in the federal regulations?

The effects of tobacco use on society include high taxes and loss of life. select the best answer from the choices provided. t f