Quantification of desmosine and isodesmosine using MALDI-ion trap tandem mass spectrometry. - Rathod, Pratikkumar; Kaur, Manjeet; Ho, Hsin-Pin; Louis, Marissa E.; Dhital, Basant; Durlik, Philip; Boutis, Gregory S.; Mark, Kevin J.; Lee, Jong I.; Chang, Emmanuel J. (Analytical & Bioanalytical Chemistry, 2018)