1 Girls start having periods at different times depending on how quickly they are developing.  If a girl has not had her first period by the time she is 16, this is still probably normal, but it would be worth checking with a doctor.
IETMS stands for Interactive Electronic Technical Manual System. Israeli English Teachers' Network. Institution of Engineering and Technology Northern Ireland. Institute of Engineering Technology of Ontario (Canada) Interagency Environmental Technology Office (Washington, DC) Industrial Effluent Treatment Plant.
ASTM International, the Massachusetts Medical Society (MMS), the Health Information. Management and Systems Society (HIMSS), the American Academy of Family. Physicians (AAFP), and the American Academy of Pediatrics. It is intended to foster.