1. Asst. Prof. of Environmental Virology, Dept. of Virology and Epidemiology, Baylor Coll. of Medicine, Houston, Tex.
2. Prof. and Chrnn., Dept. of Virology and Epidemiology, Baylor Coll. of Medicine, Houston, Tex.
3. Prof. of Virology, Dept. of Virology and Epidemiology, Baylor Coll. of Medicine, Houston, Tex.