Piquer-Martinez, Celia, Urionagüena, Amaia, Benrimoj, Shalom I., Calvo, Begoña, Dineen-Griffin, Sarah, Garcia-Cardenas, Victoria, Fernandez-Llimos, Fernando, Martinez-Martinez, Fernando, Gastelurrutia, Miguel Angel. Elsevier; 2024. Theories, models and frameworks for health systems integration. A scoping review.