Sunny Chang

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BACKGROUND Mutations in the α-synuclein gene (SNCA) cause autosomal dominant forms of Parkinson's disease, but the substantial risk conferred by this locus to the common sporadic disease has only recently emerged from genome-wide association studies. METHODS We genotyped a prioritized noncoding variant in SNCA intron 4 in 344 patients with Parkinson's(More)
A 5-year-old girl presents with symptoms of vertigo and intermittent episodes of slurred speech for 1 day. This morning she had a “popping” headache localized bilaterally to the sides and the back of the head. Her headache spontaneously resolved within 20 minutes, although she later experienced “a spinning sensation” and her knees buckled, causing her to(More)
Congenital ascites is rare, but when it occurs, urinary ascites secondary to posterior urethral valve obstruction is the most common, and tumors are the least. Among the tumors in the pediatric population, the central nervous system tumors are common, but spinal cord tumors are rare. We describe a very rare case of congenital malignant spinal cord glioma(More)
In this paper, we focus on the optimal power allocation problem in the multi-user uplink OFDMA system. For the purpose, based on the KKT conditions of the problem, we design suboptimal algorithms that may be implementable in an iterative and distributive manner. An important feature of our algorithm is that it takes the generated interference to the system(More)
BACKGROUND Elevated plasma levels of prebeta-1 high-density lipoprotein (HDL), the principal acceptor of cholesterol effluxed from macrophages, are associated with increased risk of atherosclerotic coronary heart disease and myocardial infarction. OBJECTIVE The objective of the study was to assess the effects on prebeta-1 HDL levels of 6-week(More)
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