全文获取类型
收费全文 | 479篇 |
免费 | 12篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 8篇 |
妇产科学 | 16篇 |
基础医学 | 36篇 |
口腔科学 | 2篇 |
临床医学 | 85篇 |
内科学 | 125篇 |
皮肤病学 | 23篇 |
神经病学 | 22篇 |
特种医学 | 6篇 |
外科学 | 45篇 |
综合类 | 11篇 |
预防医学 | 81篇 |
药学 | 25篇 |
肿瘤学 | 5篇 |
出版年
2023年 | 3篇 |
2020年 | 6篇 |
2019年 | 4篇 |
2016年 | 3篇 |
2015年 | 3篇 |
2014年 | 9篇 |
2013年 | 14篇 |
2012年 | 7篇 |
2011年 | 8篇 |
2010年 | 16篇 |
2009年 | 14篇 |
2008年 | 5篇 |
2007年 | 4篇 |
2006年 | 6篇 |
2002年 | 4篇 |
2001年 | 3篇 |
2000年 | 3篇 |
1999年 | 10篇 |
1998年 | 8篇 |
1997年 | 16篇 |
1996年 | 24篇 |
1995年 | 14篇 |
1994年 | 10篇 |
1993年 | 16篇 |
1992年 | 4篇 |
1991年 | 9篇 |
1990年 | 6篇 |
1989年 | 6篇 |
1988年 | 6篇 |
1987年 | 6篇 |
1986年 | 16篇 |
1985年 | 10篇 |
1984年 | 4篇 |
1983年 | 7篇 |
1982年 | 7篇 |
1981年 | 5篇 |
1980年 | 5篇 |
1979年 | 4篇 |
1976年 | 3篇 |
1965年 | 3篇 |
1959年 | 14篇 |
1958年 | 31篇 |
1957年 | 24篇 |
1956年 | 21篇 |
1955年 | 22篇 |
1954年 | 23篇 |
1949年 | 2篇 |
1948年 | 15篇 |
1947年 | 2篇 |
1946年 | 3篇 |
排序方式: 共有491条查询结果,搜索用时 0 毫秒
101.
DANIEL R. MATSON B.S. JENNIFER D. EUDY B.S. STEVEN C. MATSON M.D. † 《Pediatric dermatology》2010,27(1):98-100
Abstract: Cutaneous alternariosis is a rare infection typically observed only in immunocompromised adults, but we report here that the infection can occur in apparently healthy adolescents. We saw a clinically healthy adolescent boy who presented with cutaneous alternariosis 6 weeks after suffering a laceration to his right ankle. Treatment with itraconazole resulted in significant improvement after 1 month. 相似文献
102.
103.
HEATHER R ADAMS CHRISTOPHER A BECK ERIKA LEVY RACHEL JORDAN JENNIFER M KWON FREDERICK J MARSHALL AMY VIERHILE ERIKA F AUGUSTINE ELISABETH A DE BLIECK DAVID A PEARCE JONATHAN W MINK 《Developmental medicine and child neurology》2010,52(7):637-643
Aim The primary aim of this investigation was to examine genotype and clinical phenotype differences in individuals with juvenile neuronal ceroid lipofuscinosis (JNCL) who were homozygous for a common disease‐causing deletion or compound heterozygous. The secondary aim was to cross‐validate the Child Behavior Checklist (CBCL) and the Unified Batten Disease Rating Scale (UBDRS), a disease‐specific JNCL rating scale. Method Sixty individuals (28 males, 32 females; mean age 15y 1mo, SD 4y 9mo, range 5y 8mo–31y 1mo) with JNCL completed the UBDRS. Results No significant genotype and clinical phenotype differences were identified when comparing individuals homozygous for the deletion with a heterogeneous group of compound heterozygous individuals. There were significant correlations among related behaviour items and scales on the CBCL and UBDRS (Spearman’s rho ranging from 0.39 [p<0.05] to 0.72 [p<0.01]). Behaviour and physical function ratings were uncorrelated, supporting divergent validity of these two constructs in JNCL. Interpretation Previous reports of genotype and clinical phenotype differences were unsupported in this investigation, which did not find differences between individuals homozygous or heterozygous for the CLN3 deletion. The CBCL, an already validated measure of behaviour problems, appears valid for use in JNCL and cross‐validates well with the UBDRS. 相似文献
104.
FRANK J. THOMPSON JENNIFER FARNHAM EMMY TIDERINGTON MICHAEL K. GUSMANO JOEL C. CANTOR 《The Milbank quarterly》2021,99(3):648
Policy Points
- Medicaid policymakers have a growing interest in addressing homelessness as a social determinant of health and driver of the potentially avoidable use of expensive medical services.
- Drawing on extensive document reviews and in‐depth interviews in four early‐adopter states, we examined the implementation of Medicaid''s Section 1115 demonstration waivers to test strategies to finance tenancy support services for persons experiencing or at risk of homelessness.
105.
106.
A.J. BAILLIE P.A. BIAGIONI ANGELA FORSYTH JENNIFER J. GARIOCH D. MCPHERSON† 《The British journal of dermatology》1990,122(3):351-360
Infra-red thermography was used to quantify, at patch test sites, the allergic responses to experimental preparations of nickel sulphate and primary irritant responses to sodium lauryl sulphate in small groups of volunteers. The technique was also used to assess the patch-test responses in a much larger group of patients who had undergone routine patch testing for contact allergy with a wide range of test substances and among which there were large numbers of allergic, irritant and equivocal reactions. Thermographically, when compared to the surrounding normal skin surface, the sites of allergic reactions appeared as hot areas, the temperature and area of which were apparently dependent on the severity of the response. For allergic responses, there was a good correlation between the clinical assessment and either of two thermographic parameters, temperature and area of involvement. Compared with an aqueous solution of nickel sulphate, 'poor' formulations of the allergen, such as a suspension in soft paraffin base, elicited smaller and cooler reactions. Irritant reaction sites were not 'hot' and the temperature at such sites was no different from that of the surrounding normal skin. Infra-red thermography is a convenient non-invasive technique which apparently can be used to discriminate between irritant and allergic responses and to quantify the latter type of response. 相似文献
107.
CRISTIANE BENVENUTO-ANDRADE MD STEPHEN W. DUSZA MPH JENNIFER L. HAY PhD ANNA LIZA C. AGERO MD ALLAN C. HALPERN MD ALFRED W. KOPF MD ASHFAQ A. MARGHOOB MD 《Dermatologic surgery》2006,32(5):738-744
BACKGROUND: Confidence is an important factor in decision making and may influence patient care. OBJECTIVES: To evaluate whether short-training-based dermoscopy increases confidence in the diagnosis of skin lesions. METHODS AND MATERIALS: After a 1-hour course on dermoscopy, 20 pairs of clinical and dermoscopic images of lesions were presented to 19 dermatology residents with little or no dermoscopy experience. After viewing the clinical image, they were asked to assess their confidence in the diagnosis in a seven-point scale, with 1 reflecting that the respondent was 100% confident that the lesion was benign, while number 7 reflected 100% confidence that it was malignant. The same technique was used for dermoscopic images. RESULTS: Ten of the 20 pairs of evaluations showed a significant difference (p<.05). The largest differences were observed in lesions where clinical scores suggested that participants were uncertain about the diagnosis, but tended to decide that the lesion was benign after dermoscopy. Dermoscopy did not improve confidence in the evaluation of dysplastic lesions as well as lesions with obvious clinical diagnoses. CONCLUSIONS: Short-training-based dermoscopy improved confidence in the diagnosis of clinically challenging skin lesions, but the impact was not demonstrable for clinically obvious lesions and dysplastic nevi. 相似文献
108.
ALAN D. BERNSTEIN A. JOHN CAMM JOHN D. FISHER ROSS D. FLETCHER R. HARDWIN MEAD ANTHONY W. NATHAN VICTOR PARSONNET ANTHONY F. RICKARDS NICHOLAS P.D. SMYTH RICHARD SUTTON PETER P. TARJAN 《Pacing and clinical electrophysiology : PACE》1993,16(9):1776-1780
A new generic code, patterned after and compatible with the NASPE/BPEG Generic Pacemaker Code (NBG Code) was adopted by the NASPE Board of Trustees on January 23. 1993. It was developed by the NASPE Mode Code Committee, including members of the North American Society of Pacing and Electrophysiology (NASPE) and the British Pacing and Electrophysiology Croup (BPEC). It is abbreviated as the NBD (for NASPE/BPEC Defibrillator) Code. It is intended for describing the capabilities and operation of implanted cardioverter defibrillators (ICDs) in conversation, record keeping, and device labeling, and incorporates four positions designating: (1) shock location; (2) antitachycardia pacing location; (3) means of tachycardia detection; and (4) antibradycardia pacing location. An additional Short Form, intended only for use in conversation, was defined as a concise means of distinguishing devices capable of shock alone, shock plus antibradycardia pacing, and shock plus antitachycardia and antibradycardia pacing. 相似文献
109.
Vascular filling defects are a normal feature of the thoracic myelogram. The aim of this paper was to provide criteria for differentiating the vascular filling defects in spinal AVM's from the range of filling defects seen in non-AVM patients. Out of 940 consecutive thoracic myelograms, in non-AVM patients, 505 had vascular filling defects. These were compared with the myelographic features of nine spinal AVM's, with regard to vessel diameter, length, tortuosity and number. None of these criteria were diagnostic of AVM's as there was overlap bet ween the vascular filling defects of AVM's and the range of normal spinal cord vessels, especial ly posterior spinal veins. However, filling defects greater than 1.4 mm diameter, which are excessively tortuous, long and. multiple, should be regarded as highly suspinous of an AVM. A lateral film is important when vascular filling defects are seen, for if these filling defects are anterior to the cord, an AVM is more likely. 相似文献
110.
Spontaneous bacterial peritonitis 总被引:1,自引:0,他引:1
JENNIFER A. CUTHBERT 《Journal of gastroenterology and hepatology》1990,5(4):438-448