Noticed that too and several site activations dates back to July 2018.
With a simple assumption, 120 patients / 20 sites is just 6 patients per site.
From mid July til med December is already 5 months!
In simple maths 20 centres over 6 months enrolling 1 patient each/month would together make 120 patients enrolled. To cater for the on ramp of sites, adjust that to half, which would give us 50% enrolment by end Jan.
Then with all sites now running another 3 months for complete enrolment in April.
Last patient completing dosing in July, topline data in August 2019!