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PREGNYL (chorionic gonadotropin for injection). Accessed August 6, 2015 from: https://www.merck.com/product/usa/pi_circulars/p/pregnyl/pregnyl_pi.pdf
Chorionic gonadotropin. DRUGDEX System. 2015 Truven Health Analytics, Inc. Accessed August 6, 2015 from http://thomsonhc.com.