全文获取类型
收费全文 | 1444061篇 |
免费 | 98234篇 |
国内免费 | 2788篇 |
专业分类
耳鼻咽喉 | 20626篇 |
儿科学 | 48438篇 |
妇产科学 | 42791篇 |
基础医学 | 208925篇 |
口腔科学 | 40321篇 |
临床医学 | 121446篇 |
内科学 | 281113篇 |
皮肤病学 | 30553篇 |
神经病学 | 109728篇 |
特种医学 | 59371篇 |
外国民族医学 | 461篇 |
外科学 | 222200篇 |
综合类 | 28490篇 |
现状与发展 | 1篇 |
一般理论 | 303篇 |
预防医学 | 106814篇 |
眼科学 | 32972篇 |
药学 | 109744篇 |
9篇 | |
中国医学 | 2942篇 |
肿瘤学 | 77835篇 |
出版年
2018年 | 15518篇 |
2017年 | 12841篇 |
2016年 | 13258篇 |
2015年 | 16245篇 |
2014年 | 20216篇 |
2013年 | 27881篇 |
2012年 | 42937篇 |
2011年 | 40935篇 |
2010年 | 23646篇 |
2009年 | 23765篇 |
2008年 | 37326篇 |
2007年 | 40882篇 |
2006年 | 41532篇 |
2005年 | 48342篇 |
2004年 | 48326篇 |
2003年 | 43169篇 |
2002年 | 38172篇 |
2001年 | 61589篇 |
2000年 | 61202篇 |
1999年 | 55119篇 |
1998年 | 14774篇 |
1997年 | 13117篇 |
1996年 | 13444篇 |
1995年 | 12744篇 |
1994年 | 12071篇 |
1992年 | 46158篇 |
1991年 | 45716篇 |
1990年 | 45424篇 |
1989年 | 43999篇 |
1988年 | 40969篇 |
1987年 | 40088篇 |
1986年 | 38179篇 |
1985年 | 36168篇 |
1984年 | 26663篇 |
1983年 | 23012篇 |
1982年 | 13152篇 |
1981年 | 11524篇 |
1979年 | 25597篇 |
1978年 | 17712篇 |
1977年 | 15103篇 |
1976年 | 14172篇 |
1975年 | 16091篇 |
1974年 | 19097篇 |
1973年 | 18236篇 |
1972年 | 17476篇 |
1971年 | 16349篇 |
1970年 | 15252篇 |
1969年 | 14711篇 |
1968年 | 13758篇 |
1967年 | 12220篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
141.
Christos Loizou Göran Laurell Andreas Arvidsson David Lindquist Karin Nylander Katarina Olofsson 《Acta oto-laryngologica》2015,135(10):1058-1064
Conclusion: Recurrent respiratory papillomatosis (RRP) patients with high surgical treatment frequency (≥ 1/year, HF) were significantly younger and had a more widespread laryngeal disease compared to a low frequency treated group (< 1 treatment/year, LF). This study confirms the existence of a clinical RRP group, not primarily related to HPV sub-type, but more care-intensive and in need of more vigilant follow-up. Objectives: RRP is associated with high morbidity due to its influence on breathing and voice. The purpose of this study was to characterize RRP patients in northern Sweden and investigate possible predictor factors affecting therapeutic needs. Method: Patients from the regional referral area (northern Sweden) were categorized for age, disease duration, juvenile or adult onset, profile of disease development, number of surgical sessions in relation to disease duration, laryngeal deposition of papilloma, gender, and HPV sub-types, in order to identify patients with increased need for frequent surgical treatment. Results: The median age of the RRP patients (n = 48) was 44.5 years; 34 (71%) were males and 14 (29%) females, most were infected with HPV 6. Patients with high surgical treatment frequency/year were significantly younger and showed more widespread papillomatous vegetation in the larynx, compared to the low frequency treated group. 相似文献
142.
143.
Bj?rn Stessel Audrey A. Fiddelers Elbert A. Joosten Daisy M.N. Hoofwijk Hans-Fritz Gramke Wolfgang F.F.A. Buhre 《Medicine》2015,94(39)
Traditionally, major complications and unanticipated admission/readmission rates were used to assess outcome after day surgery. However, in view of the relative absence of major complications the quality of recovery (QOR) should be considered one of the principal endpoints after day surgery. In our study, the level of QOR is defined by a combination of the Global Surgical Recovery (GSR) Index and the Quality of Life (QOL).The aim of this study was to analyze prevalence and predictors of QOR after day surgery on the fourth postoperative day.Elective patients scheduled for day surgery from November 2008 to April 2010 were enrolled in a prospective cohort study. Outcome parameters were measured by using questionnaire packages at 2 time points: 1 week preoperatively and 4 days postoperatively. Primary outcome parameter is the QOR and is defined as good if the GSR index >80% as well as the postoperative QOL is unchanged or improved as compared with baseline. QOR is defined as poor if both the GSR index ≤80% and if the postoperative QOL is decreased as compared with baseline. QOR is defined as intermediate in all other cases. Three logistic regression analyses were performed to determine predictors for poor QOR after day surgery.A total of 1118 patients were included. A good QOR was noted in 17.3% of patients, an intermediate QOR in 34.8%, and a poor QOR in 47.8% 4 days after day surgery. The best predictor for poor QOR after day surgery was type of surgery. Other predictors were younger age, work status, and longer duration of surgery. A history of previous surgery, expected pain (by the patient) and high long-term surgical fear were significant predictors of poor QOR in only 1 of 3 prediction models.The QOR at home 4 days after day surgery was poor in the majority of patients and showed a significant procedure-specific variation. Patients at risk for poor QOR can be identified during the preoperative period based on type of surgery, age, work status, and the duration of the surgery. 相似文献
144.
145.
146.
147.
Growth Hormone Induces Recurrence of Infantile Hemangiomas After Apparent Involution: Evidence of Growth Hormone Receptors in Infantile Hemangioma
下载免费PDF全文
![点击此处可从《Pediatric dermatology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Naikhoba C. O. Munabi B.A. Qian Kun Tan H.S. Maria C. Garzon M.D. Gerald G. Behr M.D. Carrie J. Shawber Ph.D. June K. Wu M.D. 《Pediatric dermatology》2015,32(4):539-543
Infantile hemangiomas (IHs) are the most common benign tumor of infancy, characterized by a natural history of early proliferation in the first months of life to eventual involution during childhood, often with residual fibrofatty tissue. Once involution has been achieved, IHs do not typically recur. We present two cases of exogenous growth hormone therapy resulting in the recurrence of IHs in late childhood, supported by radiological, immunohistochemical, in vitro, and in vivo evidence. 相似文献
148.
149.
150.
Miguel A. Sanz Pau Montesinos Haesook T. Kim Guillermo J. Ruiz-Argüelles María S. Undurraga María R. Uriarte Lem Martínez Rafael H. Jacomo Homero Gutiérrez-Aguirre Raul A. M. Melo Rosane Bittencourt Ricardo Pasquini Katia Pagnano Evandro M. Fagundes Edo Vellenga Alexandra Holowiecka Ana J. González-Huerta Pascual Fernández Javier De la Serna Salut Brunet Elena De Lisa José González-Campos José M. Ribera Isabel Krsnik Arnold Ganser Nancy Berliner Raul C. Ribeiro Francesco Lo-Coco Bob L?wenberg Eduardo M. Rego 《Annals of hematology》2015,94(8):1347-1356