Published on in Vol 20, No 2 (2018): February
![Web-Based Alcohol, Smoking, and Substance Involvement Screening Test Results for the General Spanish Population: Cross-Sectional Study Web-Based Alcohol, Smoking, and Substance Involvement Screening Test Results for the General Spanish Population: Cross-Sectional Study](https://asset.jmir.pub/assets/c928b988ac41d742ae4b600cf3662ca2.jpg 480w,https://asset.jmir.pub/assets/c928b988ac41d742ae4b600cf3662ca2.jpg 960w,https://asset.jmir.pub/assets/c928b988ac41d742ae4b600cf3662ca2.jpg 1920w,https://asset.jmir.pub/assets/c928b988ac41d742ae4b600cf3662ca2.jpg 2500w)
1 Primary Care Research Unit, Gerencia Asistencial de Atención Primaria, Servicio Madrileño de Salud, Madrid, Spain
2 General Ricardos Primary Health Care Centre, Madrid, Spain
3 School of Health Sciences, King Juan Carlos University, Alcorcón, Madrid, Spain
4 Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Carlos III Health Institute, Madrid, Spain
5 School of Medicine, Complutense University of Madrid, Madrid, Spain
6 Department of Psychiatry, 12 Octubre University Hospital, Madrid, Spain
7 Area 8, Neurociencias y Salud Mental, Madrid, Spain
8 Red de Trastornos Adictivos (RTA), Carlos III Health Institute, Madrid, Spain
*all authors contributed equally