全文获取类型
收费全文 | 1337813篇 |
免费 | 98193篇 |
国内免费 | 2232篇 |
专业分类
耳鼻咽喉 | 19184篇 |
儿科学 | 44107篇 |
妇产科学 | 38920篇 |
基础医学 | 194093篇 |
口腔科学 | 36732篇 |
临床医学 | 114337篇 |
内科学 | 264117篇 |
皮肤病学 | 27465篇 |
神经病学 | 105431篇 |
特种医学 | 52173篇 |
外国民族医学 | 371篇 |
外科学 | 208434篇 |
综合类 | 27269篇 |
现状与发展 | 1篇 |
一般理论 | 391篇 |
预防医学 | 97763篇 |
眼科学 | 30326篇 |
药学 | 101810篇 |
1篇 | |
中国医学 | 2601篇 |
肿瘤学 | 72712篇 |
出版年
2018年 | 13425篇 |
2016年 | 11248篇 |
2015年 | 12894篇 |
2014年 | 18014篇 |
2013年 | 27198篇 |
2012年 | 37833篇 |
2011年 | 40451篇 |
2010年 | 23650篇 |
2009年 | 22193篇 |
2008年 | 38970篇 |
2007年 | 42094篇 |
2006年 | 42585篇 |
2005年 | 41883篇 |
2004年 | 40220篇 |
2003年 | 38892篇 |
2002年 | 38218篇 |
2001年 | 58586篇 |
2000年 | 60018篇 |
1999年 | 51254篇 |
1998年 | 14909篇 |
1997年 | 13405篇 |
1996年 | 13600篇 |
1995年 | 12803篇 |
1994年 | 12202篇 |
1993年 | 11248篇 |
1992年 | 41304篇 |
1991年 | 40675篇 |
1990年 | 40150篇 |
1989年 | 38953篇 |
1988年 | 36367篇 |
1987年 | 35588篇 |
1986年 | 33963篇 |
1985年 | 32470篇 |
1984年 | 24320篇 |
1983年 | 21164篇 |
1982年 | 12860篇 |
1981年 | 11385篇 |
1980年 | 10608篇 |
1979年 | 22820篇 |
1978年 | 16139篇 |
1977年 | 13971篇 |
1976年 | 13164篇 |
1975年 | 14405篇 |
1974年 | 16848篇 |
1973年 | 16239篇 |
1972年 | 15448篇 |
1971年 | 14337篇 |
1970年 | 13296篇 |
1969年 | 12805篇 |
1968年 | 12048篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
992.
Betsy D. Kennard Susan G. Silva Simon Tonev Paul Rohde Jennifer L. Hughes Benedetto Vitiello Christopher J. Kratochvil John F. Curry Graham J. Emslie Mark Reinecke John March 《Journal of the American Academy of Child and Adolescent Psychiatry》2009,48(2):186-195
ObjectiveWe examine remission rate probabilities, recovery rates, and residual symptoms across 36 weeks in the Treatment for Adolescents with Depression Study (TADS).MethodThe TADS, a multisite clinical trial, randomized 439 adolescents with major depressive disorder to 12 weeks of treatment with fluoxetine, cognitive–behavioral therapy, their combination, or pill placebo. The pill placebo group, treated openly after week 12, was not included in the subsequent analyses. Treatment differences in remission rates and probabilities of remission over time are compared. Recovery rates in remitters at weeks 12 (acute phase remitters) and 18 (continuation phase remitters) are summarized. We also examined whether residual symptoms at the end of 12 weeks of acute treatment predicted later remission.ResultsAt week 36, the estimated remission rates for intention-to-treat cases were as follows: combination, 60%; fluoxetine, 55%; cognitive–behavioral therapy, 64%; and overall, 60%. Paired comparisons reveal that, at week 24, all active treatments converge on remission outcomes. The recovery rate at week 36 was 65% for acute phase remitters and 71% for continuation phase remitters, with no significant between-treatment differences in recovery rates. Residual symptoms at the end of acute treatment predicted failure to achieve remission at weeks 18 and 36.ConclusionsMost depressed adolescents in all three treatment modalities achieved remission at the end of 9 months of treatment. 相似文献
993.
994.
995.
We followed all consecutive hip fracture patients admitted between 2004 and 2006, identified cases in which the intention was to treat non-operative and compared their functional outcome and mortality with a similar cohort treated surgically over the same period. We recorded length of hospital stay, place of discharge, pre and post-fracture mobility and residence, 30 days and 1 year mortality, re-admission due to same fracture and delayed surgery. The group treated surgically was recruited and matched for age, gender, pre and post-fracture mobility, mental confusion and independence. 25 patients were treated non-operative. 22 patients treated surgically over the same time period matched the patient characteristics of the non-operative arm. The mean hospital stay was 13 days in both groups. There were 4 extra-capsular fractures (3 displaced) and 21 intra-capsular fractures (5 displaced) in the non-operative arm and 11 extra-capsular fractures and 9 intra-capsular fractures in the surgically treated arm. 4 patients from the non-operative treatment group underwent late surgery because of persisting hip pain 20 days-2 months after the index event (2 cannulated screws, 1 hemiarthroplasty, 1 total hip arthroplasty). 11 patients in the surgical treatment arm underwent dynamic screw fixation, 1 had cannulated screw, 1 had total hip replacement and 7 had hemiarthroplasty. 14 of the non-operative treated patients were mobile independently or with aid before fracture but only 9 patients retained their pre-fracture mobility following treatment, compared to 16 patients pre-fracture and 11 patients post-fracture after surgery. 16 patients treated non-operative were living independently prior to injury but only 7 went back to their own residence. Of the operatively treated patients 14 patients were living independently and 10 patients went back to their previous residence. 1 month and 1 year mortality in the non-operative treated group was 4/21 and 7/21 respectively compared to 1/20 and 5/20 in the operative fixation group. There was no statistically significant difference in mobility, residence or mortality between the two groups (Fisher exact test, p > 0.05). Non-operative management after hip fracture is suitable for medically unfit patients and does not result in statistically significant difference in functional outcome or mortality compared to patients treated surgically. 相似文献
996.
997.
998.
999.
A case of untreated fusarial onychomycosis leading to serious consequences is reported. Fusarium solani is a widespread fungus and an occasional human pathogen. It usually invades rapidly in immunocompromised hosts, and often results in a poor outcome despite treatment. We report a woman with diabetes mellitus who had untreated fusarial infection of the nails, which developed into subcutaneous fusariosis, superinfected by bacteria, and then evolved into osteomyelitis that subsequently resulted in septic shock. Early management of mycotic nails in immunocompromised hosts is crucial to prevent life‐threatening disease. 相似文献
1000.