Fig 1.

PRISMA flow diagram for study search, selection, inclusion, and exclusion. Example or search terms strategy: (“cholecystectomy”[MeSH terms] OR “cholecystectomy”[all fields] OR “cholecystectomies”[all fields]) AND (“learning curve”[MeSH terms] OR (“learning”[all fields] AND “curve”[all fields]) OR “learning curve”[all fields]) AND (“laparoscopie”[all fields] OR “laparoscopy”[MeSH terms] OR “laparoscopy”[all fields] OR “laparoscopies”[all fields]) AND (“education”[MeSH subheading] OR “education”[all fields] OR “training”[all fields] OR “education”[MeSH terms] OR “train”[all fields] OR “train s”[all fields] OR “trained”[all fields] OR “training s”[all fields] OR “trainings”[all fields] OR “trains”[all fields]).