<prompt> FALSE statement about etiology of Endometriosis isHormonalAffects affluent classFamilial and risk is 0.5-1.5Common cause of post menopausal bleeding  <response>: D Common cause of post menopausal bleeding. Etiology of endometriosis still remains unclear and is full of theories. Various theories are: Sampson theory - retrograde menstruation Coelomic metaplasia Direct implantation Hormonal Immunological Histogenesis by induction. 