Media type: E-Article Title: Body & Brain: Energy deficit interrupts periods: Athletic girls face hormone imbalance from too few calories Contributor: Seppa, Nathan Published: Wiley, 2008 Published in: Science News, 174 (2008) 2, Seite 9-9 Language: English DOI: 10.1002/scin.2008.5591740210 ISSN: 1943-0930; 0036-8423 Keywords: General Engineering Origination: Footnote: