ABC has partnered with amfAR, The Foundation of AIDS Research, to celebrate the 50th anniversary of "General Hospital." In a press release issued today, the network said that as "GH" approaches its 50th year on the air (Monday, April 1), it will return the popular Nurses Ball event after a 12 year absence (not since 2001). amfAR's participation includes storyline integration that will mark the first time that a real-life charity will be involved in the event.