If you mean aerial drones, some number more than 670,000 UAVs have been registered by the FAA. It has been estimated that something like 1 million will be flying by the New Year 2018. I guess that some 50 industries use drones with something like 30,000+ women and men learning to be commercial, etc pilots.
1 Secondary amenorrhoea is where an established menstruation has ceasedâfor three months in a woman with a history of regular cyclic bleeding, or nine months in a woman with a history of irregular periods. 2  This usually happens to women aged 40â55.
This section shows a full list of all the diseases and conditions listed as a possible cause of Secondary amenorrhea in our database from various sources. 1  Adrenal tumor. 2  Anorexia nervosa. 3  Anovulatory cycles.  Ashermann's 1  syndrome. Autoimmune destruction of ovaries.  Chiari-Frommel 1  syndrome. Congenital adrenal hyperplasia.  Cushing syndrome.