RT Journal Article SR Electronic T1 Gender Differences in Cerebral Blood Flow as a Function of Cognitive State with PET JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 559 OP 564 VO 37 IS 4 A1 Giuseppe Esposito A1 John D. Van Horn A1 Daniel R. Weinberger A1 Karen Faith Berman YR 1996 UL http://jnm.snmjournals.org/content/37/4/559.abstract AB