Ruth M. Hadfield

BACKGROUND: An association between endometriosis and reduced risk of pre-eclampsia has recently been reported. Longitudinally-linked electronic hospital records are a valuable resource for investigating such findings in a large, population-…

BACKGROUND: Endometriosis occurs in several non-human primate species that have menstrual cycles. This study investigated the prevalence and familial aggregation of endometriosis in one of those species, the rhesus macaque. METHODS: Betwee…

OBJECTIVE: The aim of the International Endogene Study is to discover genes that influence susceptibility to endometriosis. DESIGN: The study brings together two research groups based in Australia and the United Kingdom that independently …

The relationship between endometriosis and polymorphisms in the N-acetyl transferase 2 (NAT 2) gene was investigated in a UK population, as this gene has been previously implicated in the aetiology of the disease. Point mutations in the gen…

An association between endometriosis and the glutathione S-transferase (GST) M1 null mutation has been reported in French and Slavic populations. We aimed to replicate this association of endometriosis in a UK population, and to test for as…

An association between the N314D polymorphism of galactose-1-phosphate uridyl transferase and endometriosis has recently been reported in a North American population. To determine whether such an association exists in the UK population, we …

There is now considerable evidence that endometriosis is likely to be a complex multifactorial trait, such as diabetes or asthma, in which a number of susceptibility loci interact with each other, and the environment, to produce the disease…

ObjectiveTo describe the occurrence of endometriosis in monozygotic twins.DesignPostal questionnaire plus confirmation of disease status.SettingTwins were recruited via the American Endometriosis Association and the National Endometriosis S…

The autopsy records between 1980 and 1995 of 399 female rhesus monkeys (Macaca mulatta) at the Wisconsin Regional Primate Research Center were examined. Spontaneous endometriosis was found in 81 (20%) of the animals. The mean (+/- SD) ages …

We investigated the length of time between the onset of pain symptoms and the surgical diagnosis of endometriosis in women from the UK and the USA. A total of 218 women with surgically confirmed disease, recruited through endometriosis self…