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At the assessment centers , applicants will go through a number of evaluations , such as medical , vision and lifting tests , and if they pass those , will then go through drug screening and be asked to sign a background check consent form , the TSA representative said . But barking orders simply does n't work when bargaining with insurers and hospitals , especially as medical practices swell in size and complexity , says Rick Gilkey , executive director of Emory 's Center for Healthcare Leadership . For many institutions the latter is probably more feasible as medical schools are constantly struggling with the increasing demand to add new subjects and faculty who compete for a finite number of hours and students . When the subject turned to business education , he says , and a woman stood and asked : If medical schools exist to preserve health and law schools to uphold justice , what is the mission of business schools ? " Pulmonary embolism is a serious condition and should lead the health care provider to consider the presence of an underlying leg clot or clotting abnormality , " said lead author Kirsten K. Calder , MD , from LAC + USC Medical Center in Los Angeles . " Persons with regularly scheduled work which might include periods of being " on call " to perform work at unusual hours , such as medical residents , are not included in this category . Curiously , while a recent Journal of the American Medical Association article on breastfeeding and HIV transmission in Malawi1 received coverage in publications ranging from the British Medical Journal to Time magazine , research from Durban , South Africa , of equal if not greater importance to this same problem appears largely to have been ignored . Born of an idea by Linus Torvalds , evolving from infancy as an OS just powerful enough to control a disk drive , it grew into a very powerful , Unix-like operating system with the ability to meet the needs of such demanding users as medical centers , theoretical physicists and communication corporations , as well as the more modest needs of small businesses and end users .