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Food and Drug Administration criminal investigators are reportedly inquiring into how the Guidant Corporation handled problems with its heart devices . Despite the development of the prototype , its laser collimator ( a device used to provide desired beam diameter to meet specific beam delivery requirements ) and PSDs experienced problems with thermal drift that dramatically impaired the performance of these electro-optical components and hindered validation of the tool concept . I routinely saw problems with continuation of standing order dosing long before those standing orders were computerized . OR & R acknowledged problems with the timeliness of headquarters rulings , and attributed many of these problems to staffing shortages and competing workload demands . Another scientist at a national laboratory encountered problems with the same journal when editors insisted that his team provide complete DNA sequences . Although Norplant was an extremely safe and excellent form of birth control , many women experienced problems with removal because many providers were inadequately trained .