“…Some of these tackle the offline problem (Petrovic, Morshed, & Petrovic, 2011), whereas Sauré, Patrick, Tyldesley, and Puterman (2012) and Legrain, Fortin, Lahrichi, and Rousseau (2015) solve the online problem, where appointment requests are scheduled as they arrive. Objective functions involve minimising days waiting to start treatment (Conforti, Guerriero, & Guido, 2010;Legrain et al, 2015;Petrovic, Morshed, et al, 2011;Sauré et al, 2012), days overdue to start treatment (Legrain et al, 2015;Petrovic, Morshed, et al, 2011), overtime (Legrain et al, 2015;Sauré et al, 2012) and booking decisions postponed (Sauré et al, 2012). All these papers consider patients with different priorities, for example, curative and palliative groups.…”