Guidelines that describe how annotations should be done with examples and graphics showing what the annotations look like in BRAT (http://brat.nlplab.org/)
BRAT (http://brat.nlplab.org/) configuration files for defining the entities, attributes, and relationships to annotate in substance use (tobacco, alcohol, drug use) sentences from clinical notes
Set of 130 drug use sentences and annotations from different clinical notes in MTSamples (http://www.mtsamples.com/), a publicly-available collection of clinical notes, and corresponding manual annotations …