Now it could be that the 7 week P1 like study in only 15 girls eliminates that 4 week observation period for the full P2 placebo controlled trial.
The “observation” period was to establish a baseline for each individual patient. Don’t personally think the 7 week trial will solve that necessity imo.
Or they will run the trials concurrently... While dosing the 7-wk trial, they can also enroll and begin the 4-wk observation period of the larger trial.