Michael Jackson's eldest son is refusing to let his father's wrongful death trial rule his life as he spent the fourth day of the case volunteering at a children's hospital in Los Angeles. Prince Michael's grandmother Katherine Jackson is suing concert bosses at AEG Live, the promoters behind the pop star's doomed London comeback concerts, and the case has been playing out in court this week (begs29Apr13) but the 16-year-old spent Thursday (02May13) reading to patients at a local medical facility. The teenager took to his Twitter.com page to detail his visit, and called on his followers to donate to the hospital's Literally Healing Program scheme. In a series of posts on his page, he writes, "Spent the afternoon at Children's Hospital Los Angeles with the Literally Healing Program and reading to the kids. Donate new and unused books to them or cash cause its a great organization." Katherine Jackson, who was in court on Thursday, alleges AEG bosses were negligent in ignoring her son's life-threatening health concerns as they pressed ahead with plans for the shows, and is also holding them responsible for hiring Dr. Conrad Murray, who was convicted of involuntary manslaughter for administering the dose of anaesthetic propofol which killed the King of Pop.