References
- Progesterone treatment ‘useless’. The Times, 5 October 2001: 20.
- PMS ‘cure’ that simply won't work. Daily Express, 5 October 2001: 29.
- Hormone treatment for PMS ‘in doubt’. Daily Telegraph, 5 October 2001: 20.
- ‘Remedy’ that may make PMS worse. Daily Mail, 5 October 2001: 18.
- Wyatt K, Dimmock P, Jones P, Obhrai M, O'Brien S. Efficacy of progesterone and progestogens in management of premenstrual syndrome: systematic review. BMJ 2001; 323 (7316): 776–780.
- Bland JM, Altman DG. The odds ratio. BMJ 2000; 320: 1468.