МОПР
Medical contributions included the establishment of 275 hospitals, ambulance services, the establishment of the Orthodontics Clinic and College, dental hygiene campaigns, and the mobilization of dentists to the front. The Workers' Party of Marxist Unification (POUM), a minor Marxist party in Spain at the time, organized a parallel Socorro Rojo del P.O.U.M. in opposition to the International Red Aid.