RT Journal Article SR Electronic T1 Redifferentiation Therapy with Retinoic Acid in Follicular Thyroid Cancer JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1555 OP 1558 VO 39 IS 9 A1 Frank Grünwald A1 Eva Pakos A1 Hans Bender A1 Christian Menzel A1 Rolf Otte A1 Holger Palmedo A1 Ulrich Pfeifer A1 Hans J. Biersack YR 1998 UL http://jnm.snmjournals.org/content/39/9/1555.abstract AB