Fig 1. SPIRIT diagram showing the schedule of enrollment, allocation, interventions, and assessments of this study.

–t₁  =  baseline assessment (before randomization), 0 (t₀) = randomization, t₁ = after randomization, t₂  =  25% of collected models learnt by AI, t₃  =  50% of collected models learnt by AI, t₄ = 75% of collected models learnt by AI, t₅  =  100% of collected models learnt by AI, t₆ = the whole study is completed.