1. Veerus P, Fischer K, Hovi S-L, Karro H, Rahu M, Hemminki E: Symptom reporting and quality of life in the Estonian Postmenopausal Hormone Therapy Trial. BMC Women's health. 2008, 5-10.1186/1472-6874-8-5. doi:10.1186/1472-6874-8-5
2. Hemminki E, Topo P, Kangas I: Experience and opinions of climacterium by Finnish women. European Journal of Obstetrics & Gynecology and Reproductive Biology. 1995, 62: 81-87. 10.1016/0301-2115(95)02118-Q.
3. Berg JA, Taylor DL: Symptom Experience of Filipino American Midlife Women. Menopause. 1999, 6: 105-114.
4. Kronenberg F: Hot Flashes: Epidemiology and Physiology. Ann NY Acad Sci. 1990, 592: 52-86. 10.1111/j.1749-6632.1990.tb30316.x.
5. Polo-Kantola P, Saaresranta T, Polo O: Aetiology and treatment of sleep disturbancies during perimenopause and postmenopause. CNSDrugs. 2001, 15: 445-452.