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Dr. Ying-Chin Ko; Yea-Yin Yen; Shu-Mei Yeh; Shou-Jan Lan. (1989). Female to male transmission of hepatitis b virus between chinese spouses. , 27(2), 142–144. doi:10.1002/jmv.1890270214 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research