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Efficacy and safety of 3 mg drospirenone/20 mcg ethinylestradiol oral contraceptive administered in 24/4 regimen in the treatment of acne vulgaris: a randomized, double-blind, placebo-controlled trial.
Koltun W, Lucky AW, Thiboutot D, Niknian M, Sampson-Landers C, Korner P, Marr J. Koltun W, et al. Among authors: sampson landers c. Contraception. 2008 Apr;77(4):249-56. doi: 10.1016/j.contraception.2007.11.003. Epub 2008 Mar 4. Contraception. 2008. PMID: 18342647 Clinical Trial.
A randomized controlled trial of a low-dose combined oral contraceptive containing 3 mg drospirenone plus 20 microg ethinylestradiol in the treatment of acne vulgaris: lesion counts, investigator ratings and subject self-assessment.
Maloney JM, Dietze P Jr, Watson D, Niknian M, Lee-Rugh S, Sampson-Landers C, Korner P. Maloney JM, et al. Among authors: sampson landers c. J Drugs Dermatol. 2009 Sep;8(9):837-44. J Drugs Dermatol. 2009. PMID: 19746676 Clinical Trial.
Folate status and homocysteine levels during a 24-week oral administration of a folate-containing oral contraceptive: a randomized, double-blind, active-controlled, parallel-group, US-based multicenter study.
Bart S Sr, Marr J, Diefenbach K, Trummer D, Sampson-Landers C. Bart S Sr, et al. Among authors: sampson landers c. Contraception. 2012 Jan;85(1):42-50. doi: 10.1016/j.contraception.2011.05.013. Epub 2011 Jul 13. Contraception. 2012. PMID: 22067790 Clinical Trial.