B B
 B B
 Levonorgestrel
Levonorgestrel
Class : B
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Fass.se [cited 2016-12-20].
Physicians' Desk Reference. http://www.pdr.net. [cited 2016-12-20].
Dollery C Sir, editor. Therapeutic drugs. 2nd ed. Edinburgh: Churchill Livingstone; 1999
Läkemedelsstatistik. Stockholm: Socialstyrelsen. 2015 [cited 2016-12-19.]
- Fass.se [cited 2016-12-20].
 - Physicians' Desk Reference. http://www.pdr.net. [cited 2016-12-20].
 - Dollery C Sir, editor. Therapeutic drugs. 2nd ed. Edinburgh: Churchill Livingstone; 1999
 - Läkemedelsstatistik. Stockholm: Socialstyrelsen. 2015 [cited 2016-12-19.]