RT Journal Article SR Electronic T1 Reply: Prediction vs. Prognostication and Guarantee-Time Bias: Steering Clear of the Pitfalls of Interpreting Observational Data JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 991 OP 991 DO 10.2967/jnumed.116.172130 VO 57 IS 6 A1 Elba C. Etchebehere A1 Patricia Fox A1 DenĂ¡i Milton A1 Homer Macapinlac A1 Eric Rohren YR 2016 UL http://jnm.snmjournals.org/content/57/6/991.abstract AB