I am imagining the defence to be quite short. Suspect it may involve recalling some witnesses to clarify certain things. Think it will be scattered with the defence collating and covering many different babies in each day and then on to the closing speeches.You don't think the defence will offer any evidence or call any witnesses? That would be insane! I'm sure they will call some experts. They could call the original pathologists who did the autopsies, or perhaps experts on conditions that the defence argues the baby's had like NEC etc. There might be character witnesses they could call.