PT  - JOURNAL ARTICLE
AU  - Heinemann, Klaas
AU  - Heinemann, Lothar A J
TI  - Comparative risks of venous thromboembolism among users of oral contraceptives containing drospirenone and levonorgestrel
AID  - 10.1136/jfprhc-2011-14524
DP  - 2011 Jul 01
TA  - Journal of Family Planning and Reproductive Health Care
PG  - 132--135
VI  - 37
IP  - 3
4099  - http://jfprhc.bmj.com/content/37/3/132.short
4100  - http://jfprhc.bmj.com/content/37/3/132.full
SO  - J Fam Plann Reprod Health Care2011 Jul 01; 37