MORE than 50 patients seeking treatment at the Prince of Wales have been transferred to other public hospitals in the past four weeks because of the Pat Sin Leng hill fire victims. Patients needing to check into the intensive care unit, burns unit and orthopaedic departments have been referred to the Queen Elizabeth or Princess Margaret hospitals. Professor Joseph Lau Wan-yee, acting chief of the Prince of Wales Department of Surgery, said it was expected the four severely burned pupils would need intensive care for at least another three months. They are tended by at least 35 medical staff. 'Burns patients need labour-intensive care and our burns doctors have been very occupied since the fire,' Professor Lau said. 'But we can handle the situation as doctors can be transferred internally or we can transfer the patients to other hospitals.' The four students are in critical condition in the intensive care unit and are on ventilators. Professor Lau said: 'It's like riding on a roller coaster. There are always ups and downs in their condition.' They are three girls - So Yuen-shan, 12, Chong Mei-yee, 13, and Chan Chor-man, 14 - and a boy Cheung Yun-hang, 13. Two other students - Chiu Kwong, 13, and Chan Wai-hung, 13 - are in the burns unit, both in satisfactory condition. Wai-hung was transferred to the unit two weeks ago after she showed steady improvement and was able to breathe on her own. Lee Chun-man, 13, initially believed dead after falling from a government helicopter during the rescue, is in satisfactory condition at the orthopaedic ward, where he is receiving physiotherapy for his broken legs.