background: the prevalence of vitamin d deficiency and its causative factors has been estimated more frequently in elder popula­tion, women, and patients with osteoporosis in different countries, but this issue is less defined in male population within different age groups especially in asian countries. therefore, we studied the role of effective factors in vitamin d defi­ciency and its prevale...

Planning, organizing, and managing water resources is crucial for urban areas metropolitans. Istanbul one of the largest megacities, with a population over 15 million. The large volume demand increasing scarcity clean make long-term planning necessary this city, as sustained supply requires large-scale investment projects. Successful plans require accurate projections forecasting freshwater dem...

BACKGROUND An effective response to health problems is completely dependent upon the capacities of the health system in providing timely and valid information to take action. This study was designed to identify various reasons from various perspectives for underreporting disease by physicians in the private sector in big cities in developing countries setting. METHODS In this qualitative stud...

What makes some acts immoral? Although Western theories of morality often define harmful behaviors as centrally immoral, whether this is applicable to other cultures is still under debate. In particular, Confucianism emphasizes civility as fundamental to moral excellence. We describe three studies examining how the word immoral is used by Chinese and Westerners. Layperson-generated examples wer...