1Badalona Serveis Assistencials SL, Badalona, Barcelona,
2Health Outcomes Research, Medical Unit, Pfizer SA, Alcobendas, Madrid,
3Primary Care Health Center Apenins-Montigalà, Badalona, Barcelona,
4Primary Care Health Center Morera-Pomar, Badalona, Barcelona, and
5Primary Care Health Center Tiana-Montgat, Montgat, Barcelona, Spain