Utsunomiya, T., Tanaka, A., Tatsumi, K., & Ezcurra, D. (2012). A questionnaire-based survey to assess patient satisfaction, ease-of-learning, ease-of-use, injection site pain and overall patient satisfaction of the follitropin-alpha (Gonal-f) filled-by-mass (FbM) prefilled pen compared with other systems of gonadotrophin administration. BioMed Central.

Utsunomiya, Takafumi, Atsushi Tanaka, Kenichi Tatsumi, and Diego Ezcurra. A Questionnaire-based Survey to Assess Patient Satisfaction, Ease-of-learning, Ease-of-use, Injection Site Pain and Overall Patient Satisfaction of the Follitropin-alpha (Gonal-f) Filled-by-mass (FbM) Prefilled Pen Compared With Other Systems of Gonadotrophin Administration. BioMed Central, 2012.

Utsunomiya, Takafumi, Atsushi Tanaka, Kenichi Tatsumi, and Diego Ezcurra. A Questionnaire-based Survey to Assess Patient Satisfaction, Ease-of-learning, Ease-of-use, Injection Site Pain and Overall Patient Satisfaction of the Follitropin-alpha (Gonal-f) Filled-by-mass (FbM) Prefilled Pen Compared With Other Systems of Gonadotrophin Administration. BioMed Central, 2012.