Kao, S. Y., Chen, L. M., Shi, L., Weinrich, M. C., & Miller, C. A. (1999). Causes of Maternal Mortality in Taiwan. Journal of Medical Sciences, 20(2), 69-77. https://www.airitilibrary.com/Article/Detail?DocID=10114564-199910-201305270005-201305270005-69-77