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This paper addresses the very low resolution (VLR) problem in face recognition in which the resolution of the face image to be recognized is lower than 16 × 16. With the increasing demand of surveillance camera-based applications, the VLR problem happens in many face application systems. Existing face recognition algorithms are not able to give(More)
BACKGROUND This open label study compared the effectiveness of patient-controlled sedation (PCS), with physician-administered sedation (PAS) during transvaginal ultrasound-guided oocyte retrieval (TUGOR). METHODS A total of 106 patients was randomized using a computer model to receive either PCS (n = 51) or PAS (n = 55). Intra-operative sedation and(More)
OBJECTIVE To ascertain the prevalence of menstrual problems in adolescent girls and their health-seeking behaviour. DESIGN Questionnaire survey on menstruation, menstrual problems, medical consultation, and factors influencing girls seeking medical care. SETTING Secondary schools in the catchment area of a tertiary teaching hospital in Hong Kong. (More)
OBJECTIVE Our purpose was to compare the results of laparoscopy with laparotomy in the management of ovarian masses not suspected to be malignant. STUDY DESIGN In a prospective randomized study 102 patients requiring surgical management of ovarian masses were randomly assigned to laparoscopy (52) or laparotomy (50) in a teaching hospital from July 1994 to(More)
OBJECTIVE To compare postoperative wound pain associated with the radially expanding access device and the conventional disposable cutting-tip trocar. METHODS Our randomized, double-masked, self-controlled study involved 34 women scheduled for laparoscopic adnexal surgery. In each, a 10-mm radially expanding access device was inserted laterally on one(More)
OBJECTIVE To study the prophylactic use of levonorgestrel intrauterine system (LNG-IUS) in the prevention of endometrial pathology in women having breast cancer treated with tamoxifen. DESIGN Randomised controlled trial. SETTING A tertiary teaching hospital. POPULATION One hundred and thirteen women (66 premenopausal/47 postmenopausal) who required(More)
BACKGROUND When compared with the conventional surgical evacuation for the treatment of miscarriage, medical evacuation has been largely accepted as an effective and safe management. However, there is a lack of data on the long-term reproductive outcome of these two treatment modalities, which is crucial in patient counselling. The current study evaluates(More)
BACKGROUND This study evaluated the safety of laparoscopic management for persistent adnexal mass in the second trimester of pregnancy. METHODS Between April 1994 and March 2003, 67 consecutive women underwent laparoscopic removal of adnexal masses that had persisted into the second trimester of pregnancy in an academic tertiary referral center. Operative(More)
We report a retrospective analysis of VZV infection after haematopoietic stem cell transplantation (HSCT) in children. Thirty-three (30%) of the total 109 children who were transplanted during a 7 year period developed post-transplant VZV infection. Twenty-four of these 33 (73%) children had VZV infection within 1 year following HSCT. The cumulative(More)