2.4 The Yang et al. (2003) united-atom force field . . . In this parameter set, nucleic acid parameters are still in all atom and kept the same as in ff99. ==> A detailed analysis of ff03ua has also been conducted using several fast folding beta hairpins. \begin_inset CommandInset citation LatexCommand cite key "Hsieh10" \end_inset The comparative analysis shows that the ff03 force field is quite consistent with its all-atom counterpart, ff03. ******************* Hsieh10 is already in amber.bib