INTRODUCTION Polycystic ovary syndrome (PCOS) is one of the most common female endocrine disorders (Fauser et al., 2011). It is a complex, heterogeneous disorder of uncertain aetiology, but there is strong evidence that it can, to a large degree, be classified as a genetic disease (Fauser et al., 2011). Genetic and environmental contributors to hormonal disturbances combine with other factors, including obesity (Diamanti-Kandarakis et al., 2006). Ovarian dysfunction and hypothalamic pituitary abnormalities contribute to the etiology of PCOS (Doi et al., 2005).