SAN DIEGO (AP) _ A doctor was ordered to stand trial for allegedly killing a patient who died after his healthy leg was amputated.

John Ronald Brown, 75, of San Ysidro was ordered held for trial on Friday. He will remain in prison without bail, Municipal Court Judge Leo Valentine Jr. ruled.

Brown is accused of killing Philip Bondy, 80, who died in May of gangrene from an illegal amputation performed in Tijuana. Bondy suffered from apotemnophilia, a sexual desire to have a limb removed, prosecutors said.

Brown, who pleaded innocent in May, also is charged with practicing medicine without a license. His California license was revoked in 1977 after three patients nearly died from sex change operations he performed in places such as a garage and a hotel.

Brown already served three years in prison for a 1989 conviction in San Francisco to shift the hairline of a man preparing for his transformation into a woman.

He faces up to life in prison if convicted on all counts.