全文获取类型
收费全文 | 583篇 |
免费 | 54篇 |
国内免费 | 2篇 |
专业分类
儿科学 | 16篇 |
妇产科学 | 1篇 |
基础医学 | 35篇 |
口腔科学 | 4篇 |
临床医学 | 50篇 |
内科学 | 199篇 |
皮肤病学 | 6篇 |
神经病学 | 14篇 |
特种医学 | 51篇 |
外国民族医学 | 1篇 |
外科学 | 39篇 |
综合类 | 4篇 |
预防医学 | 20篇 |
眼科学 | 2篇 |
药学 | 25篇 |
肿瘤学 | 172篇 |
出版年
2022年 | 2篇 |
2021年 | 7篇 |
2020年 | 4篇 |
2019年 | 7篇 |
2018年 | 7篇 |
2017年 | 6篇 |
2016年 | 6篇 |
2015年 | 18篇 |
2014年 | 12篇 |
2013年 | 18篇 |
2012年 | 24篇 |
2011年 | 16篇 |
2010年 | 10篇 |
2009年 | 26篇 |
2008年 | 21篇 |
2007年 | 22篇 |
2006年 | 32篇 |
2005年 | 24篇 |
2004年 | 23篇 |
2003年 | 43篇 |
2002年 | 33篇 |
2001年 | 21篇 |
2000年 | 15篇 |
1999年 | 26篇 |
1998年 | 18篇 |
1997年 | 13篇 |
1996年 | 16篇 |
1995年 | 15篇 |
1994年 | 13篇 |
1993年 | 14篇 |
1992年 | 17篇 |
1991年 | 9篇 |
1990年 | 11篇 |
1989年 | 6篇 |
1988年 | 7篇 |
1987年 | 20篇 |
1986年 | 9篇 |
1985年 | 11篇 |
1984年 | 11篇 |
1983年 | 2篇 |
1982年 | 4篇 |
1981年 | 3篇 |
1980年 | 2篇 |
1979年 | 3篇 |
1978年 | 2篇 |
1977年 | 3篇 |
1976年 | 5篇 |
1969年 | 1篇 |
1962年 | 1篇 |
排序方式: 共有639条查询结果,搜索用时 15 毫秒
1.
Sequential contrast-enhanced MR imaging of the penis 总被引:1,自引:0,他引:1
2.
Genotype-phenotype correlation for nucleotide substitutions in the IgII- IgIII linker of FGFR2 总被引:6,自引:3,他引:3
3.
Horne G; Jamaludin A; Critchlow JD; Falconer DA; Newman MC; Oghoetuoma J; Pease EH; Lieberman BA 《Human reproduction (Oxford, England)》1998,13(11):3045-3048
Insemination with donor spermatozoa is an integral part of infertility
treatment. For the last 3 years in our unit, intrauterine insemination with
donor spermatozoa (IUID) has been used in preference to vaginal
insemination. In this retrospective study, patients were offered an initial
course of five single intrauterine inseminations with cryopreserved donor
spermatozoa and treatment was then reviewed. A total of 389 patients
received 1465 inseminations. In all, 1119 cycles were monitored using
luteinizing hormone serum analyses and 346 cycles using the urine home test
kits. The clinical pregnancy rate per insemination for the cycles monitored
by the serum assay was 18.0% (202/1119) compared with the urine cycles
(13.7%, 46/346) (P <05). The pregnancy loss rate was not significantly
different (14.4%, 29/202 and 21.7%, 10/46) (serum and urine cycles
respectively). The viable clinical pregnancy rate was significantly higher
(P <03) for the serum cycles than for the cycles using the urinary
monitoring (15.5%, 173/1119 and 10.4%, 36/346 respectively). The cycles
monitored by serum assay had a significantly higher cumulative viable
clinical pregnancy rate (P <0001) of 70.2% after nine inseminations
compared with the urine monitored cycles of 54.8%. The majority of patients
opted for the serum cycles, with a minority self-selecting the urine cycles
mainly for travelling convenience. The explanation for the significant
differences between the viable clinical pregnancy rates per insemination
and the cumulative viable clinical pregnancy rates may be due to the
sensitivity of the urine home test kit or the patients' interpretation of
the result.
相似文献
4.
目的 探讨盐酸喹那普利 (QuinaprilHydrochloride)治疗轻、中度原发性高血压的有效性和安全性。方法 全国 6家医院参加的一项多中心、随机、双盲、平行组间对照研究。结果 113例原发性高血压病人治疗 8周后 ,总有效率达 85 84% ,统计学有显著性差异。盐酸喹那普利副反应较轻 ,对肾脏、肝脏、造血系统和心脏未见有害作用。结论 盐酸喹那普利是一种安全、疗效好、副反应小的治疗轻、中度原发性高血压的有效药物。 相似文献
5.
Most statistical methods for dose-finding in phase I clinical trials determine a maximum tolerable dose based on toxicity while ignoring efficacy. Most phase II designs assume that an acceptable dose has been determined and aim to estimate treatment efficacy, possibly with early stopping rules for safety monitoring. The purpose of this paper is to describe a new statistical strategy for dose-finding in single-arm clinical trials where patient outcome is characterized in terms of both response and toxicity. The strategy, which may be considered a phase I/II hybrid, was first proposed by Thall and Russell [1] and subsequently modified by Thall [2]. The underlying mathematical model expresses the probabilities of response and toxicity as interdependent functions of dose. The method is based on fixed standards for the minimum probability of response and the maximum probability of toxicity appropriate for the particular trial. The best acceptable dose is chosen for each successive patient cohort adaptively, based on the fixed standards and the dose-outcome data from patients treated previously in the trial. The scientific goals are to select one best acceptable dose for future patients and to estimate the response and toxicity probabilities at that dose, or to stop the trial early if it becomes sufficiently unlikely that any dose is both safe and efficacious. An application of the method to a trial of donor lymphocyte infusion as salvage therapy for chemo-refractory AML/MDS patients is described. To illustrate the method's flexibility and potential breadth of application, two additional examples are provided, including a hypothetical trial in which a 5% response rate is of interest. 相似文献
6.
Bromocriptine in Parkinson disease: further studies 总被引:2,自引:0,他引:2
A N Lieberman M Kupersmith G Gopinathan E Estey A Goodgold M Goldstein 《Neurology》1979,29(3):363-369
Bromocriptine was administered to 66 patients with advanced Parkinson disease (PD) and increasing disability despite optimal treatment with levodopa/carbidopa (Sinemet). Forty-five patients tolerated at least 25 mg per day of bromocriptine (the "adequately treated" group) in addition to Sinemet and had significantly decreased rigidity, tremor, bradykinesia, gait disturbance, and total score, but increased involuntary movements. Twenty-five of these 45 patients improved by at least one stage. Among the 45 patients, 27 had "on-off" effects, and in 19 the "on-off" effects decreased on bromocriptine. The mean dose of bromocriptine in adequately treated patients las 47 mg, permitting a 10 percent reduction in the dose of levodopa. Twelve adequately treated patients received bromocriptine for at least 1 year, and 8 continued for longer than this. Bromocriptine was discontinued in 29 of 66 patients because of adverse effects, including mental changes (14 patients) and involuntary movements (9 patients). All adverse effects were reversible. Despite adverse effects, expense, and scarcity, bromocriptine, when added to levodopa, is useful in patients with advanced disease who no longer respond satisfactorily to levodopa, and for whom no other treatment is available. 相似文献
7.
8.
9.
10.
Effect of known history of heart disease on survival outcomes after out‐of‐hospital cardiac arrests
下载免费PDF全文
![点击此处可从《Emergency medicine Australasia : EMA》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Magdalene HM Lee Stephanie Fook‐Chong Win Wah Sang Do Shin Tatsuya Nishiuchi Patrick Chow‐In Ko Ghulam Yasin Naroo Kwanhathai Darin Wong Ling Tiah Apichaya Monsomboon Fahad J Siddiqui Marcus EH Ong 《Emergency medicine Australasia : EMA》2018,30(1):67-76