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Espín López, L.; Carrillo Verdejo, E.; González Javier, F.; Ordoñana Martín, J. R.; Gómez-Amor, J. Incidence of Anovulatory Menstrual Cycles Among Dysmenorrheic and Non-Dismenorrheic Women: Effects on Symptomatology and Mood. PST 2010, 22, 654-658.