Pajouheshnia R, Peelen LM, Moons KGM, Reitsma JB, Groenwold RHH. Accounting for treatment use when validating a prognostic model: a simulation study. BMC Med Res Methodol. 2017 Jul 14;17(1):103. doi: 10.1186/s12874-017-0375-8
Luciano JV, D’Amico F, Feliu-Soler A, McCracken LM, Aguado J, Penarrubia-Maria MT, Knapp M, Serrano-Blanco A, Garcia-Campayo J. Cost-utility of group acceptance and commitment therapy for fibromyalgia versus recommended drugs: an economic analysis alongside a 6-month randomized controlled trial conducted in Spain (EFFIGACT Study). J Pain. 2017 Jul;18(7):868-80. doi: 10.1016/j.jpain.2017.03.001