![Comparison of follitropin β administered by a pen device with follitropin β administered by a conventional syringe in patients undergoing IVF-ET]()
Comparison of follitropin β administered by a pen device with follitropin β administered by a conventional syringe in patients undergoing IVF-ETKang, Hyuk-Jae; Kim, Chung-Hoon; Ahn, Jun-Woo; Lee, Hyang-Ah; Kim, Sung-Hoon; Chae, Hee-Dong; Kang, Byung-Moon · Clinical and Experimental Reproductive Medicine · 2011