RT Journal Article SR Electronic T1 Errors in Longitudinal Measurements of Bone Mineral: Effect of Source Strength in Single and Dual Photon Absorptiometry JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1751 OP 1757 VO 28 IS 11 A1 William L. Dunn A1 Stephen H. Kan A1 Heinz W. Wahner YR 1987 UL http://jnm.snmjournals.org/content/28/11/1751.abstract AB