Authors: Spierings, ELH Ranke, AH Honkoop, PC

Citation: Elh. Spierings et al., Precipitating and aggravating factors of migraine versus tension-type headache, HEADACHE, 41(6), 2001, pp. 554-558

Authors: Spierings, ELH Ranke, AH Schroevers, M Honkoop, PC

Citation: Elh. Spierings et al., Chronic daily headache: A time perspective, HEADACHE, 40(4), 2000, pp. 306-310