Spectroastrometry and Reverberation Mapping of Active Galactic Nuclei. II. Measuring Geometric Distances and Black Hole Masses of Four Nearby Quasars by Yan-Rong Li, Jinyi Shangguan, Jian-Min Wang, Ric Davies, Daryl J. D. Santos, Frank Eisenhauer, Yu-Yang Songsheng, Hartmut Winkler, Jesús Aceituno, Hua-Rui Bai, Jin-Ming Bai, Michael S. Brotherton, Yixian Cao, Yong-Jie Chen, Pu Du, Feng-Na Fang, Jia-Qi Feng, Helmut Feuchtgruber, Natascha M. Förster Schreiber, Yi-Xin Fu, Reinhard Genzel, Stefan Gillessen, Luis C. Ho, Chen Hu, Jun-Rong Liu, Dieter Lutz, Thomas Ott, Romain G. Petrov, Sebastian Rabien, Taro Shimizu, Eckhard Sturm, Linda J. Tacconi, Yi-Lin Wang, Zhu-Heng Yao, Shuo Zhai, Hao Zhang, Yi-Peng Zhao, Yu Zhao, (SARM Collaboration)

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