1. Patterns of youth tobacco and polytobacco usage: The shift to alternative tobacco products Harrell, Paul T.; Naqvi, Syeda Mahrukh H.; Plunk, Andrew D.; Ji, Ming; Martins, Silvia S. 2016 Articles EpidemiologyTobaccoYouth--Tobacco useTobacco useTeenagers--Tobacco useElectronic cigarettesVaping
2. Cigarette smoking and drug use among a nationally representative sample of HIV-positive individuals Pacek, Lauren R.; Harrell, Paul T.; Martins, Silvia S. 2014 Articles EpidemiologySmokingDrug abuseDrug abuse--EpidemiologyHIV-positive persons
3. Cognitive performance profiles by latent classes of drug use Harrell, Paul T.; Mancha, B.; Martins, Silvia S.; Mauro, Pia M.; Kuo, J. H.; Scherer, M.; Bolla, K. I.; Latimer, W. W. 2014 Articles EpidemiologyDrug abuseDrug abuse--EpidemiologyCognitive psychologyCognition