When the expert level is reached the participants perform a transfer test on the low-fidelity simulator (BluePhantom) within 7 days of completed simulator training. During the transfer test participants will be asked to complete a systematic ultrasound examination and to optimize the images during the scan. The performances will be videotaped and afterwards rated by two clinicians used to perform transvaginal ultrasound - one clinician used to seeing the ultrasound image top-down and the other clinician used to seeing the image bottom-up. The participants will be rated using the Objective Structured Assessment of Ultrasound Skills.