「主題」がはっきりした英文

次の英文を読んで、下線部its flawsについて、具体的かつ簡潔に200字程度でまとめなさい。
Sweden has the most comprehensive health care system in the world. All Swedish citizens are covered by national health insurance financed by contributions from the state and employers.
   Medical treatment is just one component of Sweden's broad system of health maintenance. For example, people who are sick or must stay home with sick children receive 90 percent of their salaries. Swedes are given parental leave at the birth of a child, and all Swedes are guaranteed a pension.
   This comprehensive system is not without its flaws. The first problem is its costs. Socially responsible wellness is expensive, running about35 percent of each employee's salary, in fact a rate far in excess of the rest of the world. As a result, the system faces a serious payment crisis in the immediate future and in the long term.
   Sweden's medical system is also very inefficient. Swedes have not solved the twin problems of getting rid of waiting lines and getting physicians and other health care workers to work. With salaries of these medical personnel guaranteed, regardless of how many patients they see, the system is marked by a lack of productivity. When reporters visited Sweden's largest hospitals on a weekday morning, a peak period when 80 of 120 surgeons were on duty, they found 19 of 24 operating rooms vacant. Their photos of dark and empty operating rooms-at a time when there was a one- to two-year waiting period for hip replacements and eye operations --- provoked a public outcry. Due to public pressure and greater accountability, efficiency is up.[慶応・看護より]