全文获取类型
收费全文 | 8939篇 |
免费 | 843篇 |
国内免费 | 204篇 |
专业分类
耳鼻咽喉 | 91篇 |
儿科学 | 318篇 |
妇产科学 | 197篇 |
基础医学 | 552篇 |
口腔科学 | 178篇 |
临床医学 | 1504篇 |
内科学 | 2133篇 |
皮肤病学 | 173篇 |
神经病学 | 638篇 |
特种医学 | 253篇 |
外科学 | 2012篇 |
综合类 | 24篇 |
一般理论 | 4篇 |
预防医学 | 567篇 |
眼科学 | 379篇 |
药学 | 383篇 |
肿瘤学 | 580篇 |
出版年
2023年 | 115篇 |
2021年 | 108篇 |
2020年 | 125篇 |
2019年 | 76篇 |
2018年 | 171篇 |
2017年 | 214篇 |
2016年 | 231篇 |
2015年 | 180篇 |
2014年 | 281篇 |
2013年 | 419篇 |
2012年 | 246篇 |
2011年 | 264篇 |
2010年 | 322篇 |
2009年 | 427篇 |
2008年 | 286篇 |
2007年 | 231篇 |
2006年 | 246篇 |
2005年 | 259篇 |
2004年 | 191篇 |
2003年 | 178篇 |
2002年 | 165篇 |
2001年 | 240篇 |
2000年 | 200篇 |
1999年 | 278篇 |
1998年 | 226篇 |
1997年 | 260篇 |
1996年 | 350篇 |
1995年 | 306篇 |
1994年 | 245篇 |
1993年 | 158篇 |
1992年 | 217篇 |
1991年 | 239篇 |
1990年 | 135篇 |
1989年 | 222篇 |
1988年 | 154篇 |
1987年 | 156篇 |
1986年 | 157篇 |
1985年 | 134篇 |
1984年 | 132篇 |
1983年 | 116篇 |
1982年 | 87篇 |
1981年 | 85篇 |
1980年 | 95篇 |
1979年 | 70篇 |
1978年 | 86篇 |
1977年 | 61篇 |
1976年 | 58篇 |
1975年 | 67篇 |
1973年 | 53篇 |
1972年 | 63篇 |
排序方式: 共有9986条查询结果,搜索用时 15 毫秒
1.
2.
Bob C. Mulder Merel A. A. van Lelyveld Sigrid C. J. M. Vervoort Anne Marike Lokhorst Cees M. J. van Woerkum Jan M. Prins 《Health communication》2016,31(1):35-46
Since the introduction of cART (combination antiretroviral therapy), HIV has evolved into a chronic disease such that it requires lifelong medical treatment to which patients must adhere. Communication with health care providers is pivotal in supporting patients to adapt to having HIV and adhering to treatment, in order to maintain health and quality of life. Previous research indicates that communication is optimal when it matches patient preferences for information exchange, relationship establishment, and involvement in treatment decisions. The aim of the present study is to explore HIV patient communication preferences as well as patient experiences with their providers (not) matching their preferences. A second aim is to explore provider beliefs about patient preferences and provider views on optimal communication. Data were collected through interviews with 28 patients and 11 providers from two academic hospitals. Results indicate that patient preferences reflect their cognitive, emotional, and practical needs such that patients look to increase their sense of control over their HIV. Patients aim to further increase their sense of control (by proxy) through their relationship with their providers and through their decisional involvement preferences. Providers are well aware of patient communication preferences but do not explicate underlying control needs. Implications for clinical practice are discussed. 相似文献
3.
Prevalence of vitamin D depletion among morbidly obese patients seeking gastric bypass surgery 总被引:5,自引:0,他引:5
Arthur M. Carlin M.D. D. Sudhaker Rao MB B.S. F.A.C.P. F.A.C.E. Ali M. Meslemani M.D. Jeffrey A. Genaw M.D. Nayana J. Parikh Shiri Levy M.D. Arti Bhan M.D. Gary B. Talpos M.D. 《Surgery for obesity and related diseases》2006,2(2):696-103
BACKGROUND: Abnormalities in calcium and vitamin D metabolism have been reported after bariatric surgery. The purpose of this study was to evaluate vitamin D nutritional status among morbidly obese patients before gastric bypass surgery. METHODS: We prospectively studied 279 morbidly obese patients seeking gastric bypass surgery for vitamin D nutritional status as assessed by serum 25-hydroxyvitamin D level. In addition, serum samples were analyzed for calcium, alkaline phosphatase (AP), intact parathyroid hormone (PTH), and 1,25-dihydroxyvitamin D. RESULTS: Mean patient age was 43 +/- 9 years; 87% of the study patients were women, and 72% were white. Serum calcium and AP levels were normal in 88% and 89% of the patients, respectively. Vitamin D depletion, defined as serum 25-hydroxyvitamin D level 相似文献
4.
5.
6.
LESLEY BOULTON MB CHB FRACO DO Ophthalmologist 《Clinical & experimental ophthalmology》1986,14(4):365-371
The Low Vision Clinic at the Palmerston North Hospital has now been oerating for 70 years. Over the course of these ten years a number of factors have emerged which can be as readily applied to general ophthalmological practice as to low vision practice. The philosophy of low vision care is one of which all ophthalmologists should be aware and includes factors to be taken into account when dealing with children, people in the workplace, and everyday factors involved in daily living activities, all of which are equally relevant in routine ophthalmological practice. This paper endeavours to share some thoughts on these factors and also discusses means by which the visually handicapped can be helped in areas where specialist low vision services are not readily available. 相似文献
7.
Comparison of trichloroethylene and enflurane as adjuncts to nitrous oxide and relaxant anaesthesia 总被引:1,自引:0,他引:1
Forty women who underwent gynaecological surgery were randomly allocated to receive trichloroethylene, enflurane, or enflurane plus fentanyl as adjuncts to nitrous oxide/relaxant anaesthesia with controlled ventilation. No serious cardiac dysrhythmias were seen in any group. Each patient was observed postoperatively for 4 hours by a nurse blind to the technique used, and questioned at 24 hours by a similarly blinded anaesthetist. Recovery after trichloroethylene was not significantly prolonged although postoperative analgesia by visual analogue was better, opiate analgesia was required less frequently and there was less nausea and vomiting than in either of the enflurane groups. We argue for the continued use of trichloroethylene by this technique, because it costs one hundred times less than enflurane and because of the potential morbidity of the postoperative opiate dosage required after enflurane. 相似文献
8.
P. H. B. Willemse J. G. Aalders J. Bouma N. H. Mulder R. C. J. Verschueren E. G. E. de Vries D. Th. Sleijfer 《Gynecologic oncology》1987,28(3):268-277
Thirteen patients with a malignant germ cell tumor of the ovary have been treated with a combination of vinblastine, bleomycin, and cisplatin (VBP). In 12 patients a complete remission was reached, which was maintained in 10 of these patients. One patient with large tumor residues and a partial remission became CR after surgery. The tumor recurred in 2 patients after 6 and 27 months. Overall, 11 of these patients are in long-term remission, from 14 to 84 months after the start of treatment. VBP is an effective treatment for malignant germ cell tumors of the ovary, even in patients with large tumor residuals. 相似文献
9.
E.Paul Kirk MB BS J. Santa MD T. Heckler MBA M. Collins MD 《American journal of obstetrics and gynecology》1998,178(6):1222-1228
OBJECTIVE: Our purpose was to assess whether legislative action influenced the role of obstetrician-gynecologists as primary care physicians. STUDY DESIGN: An observational study was performed on the basis of a questionnaire sent to 410 obstetrician-gynecologists and 27 medical directors of managed-care organizations. RESULTS: Of 67% of obstetrician-gynecologists and 96% of medical directors who responded, there was agreement as to the content of primary care, but a minority (38%) of obstetrician-gynecologists identified themselves as primary care providers. A minority of medical directors (35%) felt that obstetrician-gynecologists should serve in that role. Both obstetrician-gynecologists and medical directors felt that legislation had little impact. CONCLUSION: The reticence of obstetrician-gynecologists to assume a major role in primary care appears to be the result of an uneasiness with accepting a more comprehensive role in patient management and gatekeeping. They appear comfortable with the more traditional roles but feel that training and experience has not prepared them well for the management of more complex medical problems. (Am J Obstet Gynecol 1998;178:1222-8.) 相似文献
10.