Dr Juan Carlos Castillo, PhD is an expert in Gynaecology and Obstetrics and Human Reproduction. He holds a PhD in Medicine and belongs to the European Society of Human Reproduction and Embryology. Dr Castillo has written more than 50 articles for well-known Spanish and international medical magazines. He is also the author of several chapters on Reproductive Medicine and he has been a speaker in several Spanish and international conferences on the subject. He has written about Assisted Human Reproduction and ultrasound diagnostics. He became a member of medical team at Instituto Bernabeu in 2013. The doctor’s professional fields of interest include Ovarian Hyperstimulation Syndrome prevention and final egg maturation with GnRH agonist.