全文获取类型
收费全文 | 1890篇 |
免费 | 107篇 |
国内免费 | 59篇 |
专业分类
耳鼻咽喉 | 14篇 |
儿科学 | 100篇 |
妇产科学 | 43篇 |
基础医学 | 207篇 |
口腔科学 | 37篇 |
临床医学 | 233篇 |
内科学 | 404篇 |
皮肤病学 | 68篇 |
神经病学 | 73篇 |
特种医学 | 336篇 |
外科学 | 145篇 |
综合类 | 32篇 |
预防医学 | 113篇 |
眼科学 | 23篇 |
药学 | 85篇 |
中国医学 | 2篇 |
肿瘤学 | 141篇 |
出版年
2022年 | 9篇 |
2021年 | 24篇 |
2020年 | 25篇 |
2019年 | 20篇 |
2018年 | 31篇 |
2017年 | 17篇 |
2016年 | 18篇 |
2015年 | 24篇 |
2014年 | 31篇 |
2013年 | 63篇 |
2012年 | 59篇 |
2011年 | 44篇 |
2010年 | 69篇 |
2009年 | 79篇 |
2008年 | 53篇 |
2007年 | 85篇 |
2006年 | 48篇 |
2005年 | 47篇 |
2004年 | 44篇 |
2003年 | 38篇 |
2002年 | 35篇 |
2001年 | 40篇 |
2000年 | 31篇 |
1999年 | 43篇 |
1998年 | 79篇 |
1997年 | 84篇 |
1996年 | 103篇 |
1995年 | 67篇 |
1994年 | 63篇 |
1993年 | 54篇 |
1992年 | 25篇 |
1991年 | 28篇 |
1990年 | 36篇 |
1989年 | 54篇 |
1988年 | 54篇 |
1987年 | 51篇 |
1986年 | 57篇 |
1985年 | 51篇 |
1984年 | 24篇 |
1983年 | 25篇 |
1982年 | 19篇 |
1981年 | 21篇 |
1980年 | 16篇 |
1979年 | 18篇 |
1978年 | 17篇 |
1977年 | 15篇 |
1976年 | 24篇 |
1975年 | 22篇 |
1971年 | 9篇 |
1970年 | 9篇 |
排序方式: 共有2056条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
Lieve Peremans Veronique Verhoeven Hilde Philips Joke Denekens Paul Van Royen 《The European journal of contraception & reproductive health care》2007,12(4):317-325
OBJECTIVE: To evaluate how Belgian health care providers deal with a request for emergency contraception. METHOD: In 2002-2003 we conducted 12 focus groups with pharmacists, general practitioners and school physicians. A skilled moderator accompanied by an observer conducted the focus groups using a semi-structured screenplay. RESULTS: All these health care providers agree with the free access to emergency contraception (EC), but experience considerable frustration with regard to the practical aspects and the legal framework. General practitioners (GPs) claim to spend a lot of time on requests for EC and they are concerned about the quality of the counselling provided in pharmacies. Pharmacists are creative when giving counselling in the pharmacy, but there is, nevertheless, a problem with a lack of privacy. School physicians are frustrated that there is no legal possibility to respond to a request for EC when they feel they are ideally placed to advise adolescents. CONCLUSION: The over-the-counter sale of EC offers women better access, but many barriers still interfere with optimal care. Pharmacists experience a lack of skills to communicate with adolescents and a lack of privacy to give counselling. GPs have good intentions, but are confronted with a lack of willingness on the part of the patients and also financial barriers. School physicians want more possibilities to help adolescents. 相似文献
5.
JC Sitek† M Loeb‡ JR Ronnevig¶ 《Journal of the European Academy of Dermatology and Venereology》2007,21(7):891-896
BACKGROUND: Since 1997, a number of trials have shown promising results in treating generalized vitiligo with narrowband ultraviolet B (UVB) both in adults and children. However, there is little knowledge concerning the duration and permanency of the treatment-induced repigmentation. OBJECTIVE: Our main objective was to perform a follow-up trial of successfully treated patients receiving narrowband UVB for generalized vitiligo. METHODS: We have investigated to what degree the treatment-induced repigmentation remains stable for up to 2 years post-treatment. We performed an initial open trial including 31 patients with generalized vitiligo. They received narrowband UVB thrice weekly for up to 12 months. Patients experiencing > 75% repigmentation were defined responders and were included in the follow-up trial. Responders were followed every 6 months for up to 2 years after cessation of treatment. We observed the pigmentation status and registered any changes indicating loss of pigmentation and relapse. RESULTS: Eleven of the 31 treated patients were included in the follow-up trial. Six patients had relapse and five patients had stable response 24 months after cessation of treatment. Four out of six relapses were within 6 months post-treatment. CONCLUSION: In our study population of 31 patients with generalized vitiligo, five patients (16%) experienced > 75% stable repigmentation 2 years after cessation of a treatment programme of up to 1 years narrowband UVB therapy. 相似文献
6.
Twenty women diagnosed with functional urinary incoordination were randomly assigned to one of two treatment groups: biofeedback or progressive muscle relaxation. Ten subjects who were placed on a waiting list prior to treatment allocation served as a comparison group. The biofeedback intervention focused specifically on retraining of pelvic floor musculature (PFM). Patients were assessed pretreatment, posttreatment, and at 2-month follow-up. Outcome measures included self-reported symptomatology, psychological functioning, psychophysiological assessment of the PFM, and urologist ratings of problem severity and treatment efficacy. Both treatment approaches proved effective in improving symptomatology and psychological state. Subjects on the waiting list demonstrated no change in urological difficulties. No differences were found between the two treatment groups on any of the outcome measures. Theoretical and practical implications of the results are discussed. 相似文献
7.
Pernes JM; Vitoux JF; Brenoit P; Raynaud A; Parola JL; Roth JP; Angel CY; Fiessinger JN; Roncato M; Gaux JC 《Radiology》1986,158(2):481-485
Thirty-five patients hospitalized for recent angiographically documented arterial occlusion in the legs (27 femoropopliteal arteries and eight grafts) benefited from local fibrinolytic therapy delivered at the site of the occlusion with a 4- or 5-F catheter. This therapy combined a continuous urokinase (UK) infusion of 1,000 U/kg/hour and a lysyl plasminogen (LYS-PLG) infusion of 15 microkatals every 30 minutes. Angiographically confirmed lysis was obtained in 85% of the cases. Only 3% of the patients had major and 6% had minor groin hematomas. Only two patients had concentrations of fibrinogen as low as 100 mg/dl. Intravascular infusion of UK-LYS-PLG is as effective as streptokinase. Its excellent tolerance makes it a good alternative in the treatment of acute ischemia in the lower limbs. 相似文献
8.
Ultrasound (US) can be used to visualize vertebral segments, suggesting a quantitative means of studying vertebral column growth in utero and thus a means of detecting developmental abnormalities. US images of the lumbar spine were obtained in 128 clinically normal fetuses between the gestational age of 11 through 41 weeks. A large-aperture, dynamically focused US system capable of regional magnification was used. Average lumbar spacing was calculated from distance between centrums of at least four lumbar bodies. The average distance between lumbar centrums increased nearly linearly throughout the second and third trimesters (r2 = 0.98). Enhanced anatomic display implies new capabilities for recognizing developmental abnormalities antenatally. 相似文献
9.
10.
LN Weinberger MJ Zirwas JC English III 《Journal of the European Academy of Dermatology and Venereology》2007,21(2):156-162
Male genital oedema can be defined as swelling or the appearance of swelling of the scrotum and/or the penile shaft and prepuce. Despite the various causes of genital oedema reported in the published work, a concise approach to the evaluation and management has not been sufficiently addressed. 相似文献