APA

Seeber B., Ziehr S. C., Gschlieβer A., Gschliesser A., Moser C., Mattle V., Seger C., Griesmacher A., Concin N., Concin H. & Wildt L. (20130131). Quantitative levonorgestrel plasma level measurements in patients with regular and prolonged use of the levonorgestrel-releasing intrauterine system. : Contraception.

Chicago

Seeber Beata, Ziehr Stephanie C, Gschlieβer Andreas, Gschliesser Aandrea, Moser Christina, Mattle Verena, Seger Christoph, Griesmacher Andrea, Concin Nicole, Concin Hans and Wildt Ludwig. 20130131. Quantitative levonorgestrel plasma level measurements in patients with regular and prolonged use of the levonorgestrel-releasing intrauterine system. : Contraception.

Harvard

Seeber B., Ziehr S. C., Gschlieβer A., Gschliesser A., Moser C., Mattle V., Seger C., Griesmacher A., Concin N., Concin H. and Wildt L. (20130131). Quantitative levonorgestrel plasma level measurements in patients with regular and prolonged use of the levonorgestrel-releasing intrauterine system. : Contraception.

MLA

Seeber Beata, Ziehr Stephanie C, Gschlieβer Andreas, Gschliesser Aandrea, Moser Christina, Mattle Verena, Seger Christoph, Griesmacher Andrea, Concin Nicole, Concin Hans and Wildt Ludwig. Quantitative levonorgestrel plasma level measurements in patients with regular and prolonged use of the levonorgestrel-releasing intrauterine system. : Contraception. 20130131.