RT Journal Article SR Electronic T1 Improving Esophageal Transit Scintigraphy JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1371 OP 1374 VO 32 IS 7 A1 Herbert A. Klein YR 1991 UL http://jnm.snmjournals.org/content/32/7/1371.abstract AB