Differentiations as n (18 vs 18): patient / control 0.88 (95% CI 0.77 to 1.01), p = 0.071 Clones as n (6 vs 6): patient / control 0.88 (95% CI 0.68 to 1.14), p = 0.3 Donors as n (3 vs 3): patient / control 0.88 (95% CI 0.53 to 1.46), p = 0.52