“Between 1978 and 1985 procaine (10 mg·kg‐1) with hyaluronidase or 2‐chloroprocaine (12 mg·kg‐1) provided nerve blockade; after 1985, lignocaine (6.8 mg·kg‐1), or a combination of lignocaine or mepivacaine and 2‐chloroprocaine, were the preferred agents.”