González Ortega M A, Santos G, Reyes P A
Arch Inst Cardiol Mex. 1979 Nov-Dec;49(6):1122-9.
There are described 3 cases of patients with LED in which the obtained results of AAN's research, by means of IFI, were negative in a transitory or a permanent way. This situation can motive the doubt at the diagnostic, even though it exists in a little patients' group. In this work there are revised its causes and mechanisms.
