Table 1.

Eligibility criteria for case and control selection.

Cases	Controls
Referred with postmenopausal bleeding	Referred with postmenopausal bleeding
Biopsy proven AH or EC	AH and EC excluded following routine diagnostic investigations, including TVS, biopsy and/or hysteroscopy
Able to give informed consent	Able to give informed consent
Sample taken prior to commencement of any treatment, including surgery, hormone therapy or chemotherapy	Sample taken prior to commencement of any treatment, including surgery or hormone therapy
	Can include those with benign pathologies such as benign polyp or atrophic vaginitis