Can be routinely used to safely screen for abnormal fetal development

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.

it all depends on how long the hours are. i think they wouldn't approve of it. in my opinion.