Jackson's brother: 'Michael used sperm doctor'

Michael Jackson conceived his two eldest children with ex-wife Debbie Rowe using a "sperm doctor", according to a book proposal the superstar's older brother Jermaine put forward in 2003.

The eight-page synopsis, obtained by the New York Daily News, for Jermaine's unpublished book 'Legacy: Surviving the best and the worst' contradicts the Thriller singer's claim he fathered Prince Michael I, nine, and Paris, seven, "the natural way".