Towards detecting cocaine use using smartwatches in the NIDA clinical trials network: Design, rationale, and methodology

August F. Holtyn, Eugene Bosworth, Lisa A. Marsch, Bethany McLeman, Andrea Meier, Elizabeth C. Saunders, Emre Ertin, Md Azim Ullah, Shahin Alan Samiei, Monowar Hossain, Santosh Kumar, Kenzie L. Preston, Massoud Vahabzadeh, Dikla Shmueli-Blumberg, Julia Collins, Jennifer McCormack, Udi E. Ghitza