Structured management strategy versus usual care for gastroesophageal reflux disease: Rationale for pooled analysis of five European cluster-randomized trials

1. Ponce, J.
2. Garrigues, V.
3. Tabaglio, E.
4. Gschwantler, M.
5. Güallar, E.
6. Tafalla, M.
7. Nuevo, J.
8. Hatlebakk, J.G.