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Time to onset of pain relief after intake of the APC combination. a, b Show the data for TTH and migraine patients. In both patient groups the majority reported onset of pain relief within 30 min. A higher proportion of patients who used the APC combination for the first time (c) reported onset of pain relief within the first 15 min after intake, compared to experienced APC users (d). See text for details. Numbers of patients for the respective groups are given above the columns
