1. American Center for Reproductive Medicine, Department of Urology, Cleveland Clinic, Cleveland, OH, USA.
2. Department of Microscopy, Laboratory of Cell Biology and Unit for Multidisciplinary Research in Biomedicine, Abel Salazar Institute of Biomedical Sciences (ICBAS), University of Porto, Porto, Portugal.
3. Department of Urology, Hamad Medical Corporation and Weill Cornell Medicine-Qatar, Doha, Qatar.