My vote is for bias. Linda Greenhouse can't be that ignorant, can she?
From what I've read, Warren Hern doesn't even perform partial-birth abortions. He prefers D and E abortions or induction abortions and even admitted in 1995 to the American Medical News that he had "very serious reservations" about partial-birth abortion. He also said, "I'm not going to tell somebody else they should not do this procedure. But I'm not going to do it."
How can someone write an article about a certain procedure (partial-birth abortion) and then try to say the descriptions of the procedure are "well off the mark" and then cite an abortionist describing another type of abortion procedure as evidence? It's simply ridiculous that this garbage is somehow considered journalism.