Stratification of patients based on the Neuropathic Pain Symptom Inventory: development and validation of a new algorithm - Bouhassira, Didier; Branders, Samuel; Attal, Nadine; Fernandes, Ana Mercia; Demolle, Dominique; Barbour, Julio; Ciampi de Andrade, Daniel; Pereira, Alvaro (Pain (Amsterdam), 2021)