Ernst E, Posadzki P, Lee MS (2011). «Complementary and alternative medicine (CAM) for sexual dysfunction and erectile dysfunction in older men and women: an overview of systematic reviews». Maturitas. 70 (1): 37–41. PMID21782365. doi:10.1016/j.maturitas.2011.06.011
Lee, MS; Lee, HW; You, S; Ha, KT (2016). «The use of maca (Lepidium meyenii) to improve semen quality: A systematic review». Maturitas (Review) (em inglês). 92: 64–69. PMID27621241. doi:10.1016/j.maturitas.2016.07.013
Lee MS, Shin BC, Yang EJ, Lim HJ, Ernst E (2011). «Maca (Lepidium meyenii) for treatment of menopausal symptoms: A systematic review». Maturitas (em inglês). 70 (3): 227–33. PMID21840656. doi:10.1016/j.maturitas.2011.07.017
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Ernst E, Posadzki P, Lee MS (2011). «Complementary and alternative medicine (CAM) for sexual dysfunction and erectile dysfunction in older men and women: an overview of systematic reviews». Maturitas. 70 (1): 37–41. PMID21782365. doi:10.1016/j.maturitas.2011.06.011
Lee, MS; Lee, HW; You, S; Ha, KT (2016). «The use of maca (Lepidium meyenii) to improve semen quality: A systematic review». Maturitas (Review) (em inglês). 92: 64–69. PMID27621241. doi:10.1016/j.maturitas.2016.07.013
Lee MS, Shin BC, Yang EJ, Lim HJ, Ernst E (2011). «Maca (Lepidium meyenii) for treatment of menopausal symptoms: A systematic review». Maturitas (em inglês). 70 (3): 227–33. PMID21840656. doi:10.1016/j.maturitas.2011.07.017