美国著名正畸学家Ｐｈｅｌｐｓ教授访问北医美国著名正畸学家、ＣａｓｅＷｅｓｔｅｒｎ大学正畸科主任、临床教授ＡｒｔｈｕｒＥ．Ｐｈｅｌｐｓ应邀于１９９６年７月１１～１４日访问了北医大口腔医学院正畸科，并进行了２天的学术交流。众所周知，Ｄｒ．Ｌ．Ｍｅｒｒｉｆ... Professor Phelps, a famous American orthodontist, visited Arthur E, a well-known orthodontist in North American medicine, director of orthodontics department of CaseWestern University and clinical professor. Phelps was invited to visit the Department of Orthodontics of Beijing Medical University Stomatology Hospital from July 11 to July 14, 1996 and conducted a two-day academic exchange. As we all know, Dr. L. Merrif ...