المؤلفون: Wignall, F. Stephen, Hyams, Kenneth C., Phillips, Irving A., Escamilla, Joel, Tejada, Abelardo, Li, Olga, Lopez, Francisco, Chauca, Gloria, Sanchez, Sara, Roberts, Chester R.

المصدر: Journal of Medical Virology; 1992, Vol. 38 Issue 1, p44-48, 5p

المؤلفون: Hyams, Kenneth C., Phillips, Irving A., Moran, Alberto Yuen, Tejada, Abelardo, Wignall, F. Stephen, Escamilla, Joel

المصدر: Journal of Medical Virology; 1992, Vol. 37 Issue 2, p127-131, 5p