Symptom prevalence during menopause and factors associated with symptoms and menopausal age
Gjelsvik B, Rosvold EO, Straand J, Dalen I, Hunskaar S. Symptom prevalence during menopause and factors associated with symptoms and menopausal age. Results from the Norwegian Hordaland Women's Cohort study. Maturitas 2011 Dec;70(4):383-90.