Setti 2012c.

Methods	Prospective randomised clinical trial performed in a private fertility centre (Brazil). Period of enrolment not reported
Participants	Eligibility criteria: women undergoing ICSI as a result of unexplained fertility
Interventions	Couples were randomised into 2 groups: Intervention: sperm selection in the ICSI group was analysed under 6000x magnification Control: sperm selection in the ICSI group was analysed under 400x magnification
Outcomes	Fertilisation rate, high‐quality embryo rate, number of transferred embryos, implantation rate, and pregnancy rate
Notes	Miscarriage, live birth, and congenital abnormalities not reported Implantation rate: 39.6% (IMSI) vs 19.4% (ICSI); P = 0.019 Authors were contacted for further information regarding period of enrolment and eligibility criteria but no answer was received by the completion of the present update.

ART: assisted reproduction technique; DNA: deoxyribonucleic acid; FSH: follicle‐stimulating hormone; ICSI: intracytoplasmic sperm injection; IMSI: intracytoplasmic morphologically selected sperm injection; IU: international units.