Initial development toward non-invasive drug monitoring via untargeted mass spectrometric analysis of human skin - Jarmusch, Alan K.; Elijah, Emmanuel O.; Vargas, Fernando; Bouslimani, Aminada; Silva, Ricardo Roberto da; Ernst, Madeleine; Wang, Mingxun; del Rosario, Krizia K.; Dorrestein, Pieter C.; Tsunoda, Shirley M. (Analytical Chemistry, 2019)