全文获取类型
收费全文 | 2166812篇 |
免费 | 158291篇 |
国内免费 | 4014篇 |
专业分类
耳鼻咽喉 | 29014篇 |
儿科学 | 72644篇 |
妇产科学 | 60590篇 |
基础医学 | 319287篇 |
口腔科学 | 61543篇 |
临床医学 | 199868篇 |
内科学 | 416704篇 |
皮肤病学 | 48571篇 |
神经病学 | 175731篇 |
特种医学 | 82328篇 |
外国民族医学 | 554篇 |
外科学 | 313883篇 |
综合类 | 46619篇 |
现状与发展 | 3篇 |
一般理论 | 952篇 |
预防医学 | 174360篇 |
眼科学 | 49205篇 |
药学 | 157461篇 |
10篇 | |
中国医学 | 3947篇 |
肿瘤学 | 115843篇 |
出版年
2018年 | 24111篇 |
2017年 | 18726篇 |
2016年 | 21223篇 |
2015年 | 23518篇 |
2014年 | 31882篇 |
2013年 | 49645篇 |
2012年 | 66147篇 |
2011年 | 71042篇 |
2010年 | 41501篇 |
2009年 | 38561篇 |
2008年 | 67024篇 |
2007年 | 71509篇 |
2006年 | 71244篇 |
2005年 | 69235篇 |
2004年 | 66824篇 |
2003年 | 64420篇 |
2002年 | 62403篇 |
2001年 | 94797篇 |
2000年 | 97699篇 |
1999年 | 81266篇 |
1998年 | 23463篇 |
1997年 | 21183篇 |
1996年 | 21370篇 |
1995年 | 20282篇 |
1994年 | 18861篇 |
1993年 | 17633篇 |
1992年 | 63889篇 |
1991年 | 62680篇 |
1990年 | 61344篇 |
1989年 | 59294篇 |
1988年 | 54402篇 |
1987年 | 54102篇 |
1986年 | 51093篇 |
1985年 | 48921篇 |
1984年 | 37213篇 |
1983年 | 32064篇 |
1982年 | 19353篇 |
1981年 | 17536篇 |
1979年 | 34910篇 |
1978年 | 25578篇 |
1977年 | 21568篇 |
1976年 | 20207篇 |
1975年 | 21514篇 |
1974年 | 26096篇 |
1973年 | 25379篇 |
1972年 | 23801篇 |
1971年 | 22183篇 |
1970年 | 20797篇 |
1969年 | 19498篇 |
1968年 | 18162篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
101.
Adriana B Campaner Alessandro Scapinelli Ruy O Machado Roberto E Dos Santos Geni W Beznos Tsutomu Aoki 《Gynecological endocrinology》2006,22(7):395-398
We report a case of a prepubertal girl with juvenile primary hypothyroidism presenting as ovarian cysts and precocious puberty. The 7-year-old female was referred to our clinic because of a pelvic/abdominal mass and vaginal bleeding. Besides these findings, on physical examination we noticed the thyroid gland globally increased and the presence of secondary sexual characteristics. Based upon the clinical profile and investigations, the patient was diagnosed with juvenile primary hypothyroidism due to autoimmune thyroiditis. The cysts and precocious puberty resolved spontaneously after the simple replacement of thyroid hormone. It is important to bear in mind hypothyroidism in cases of girls presenting ovarian cysts and precocious puberty in order to avoid unnecessary surgery on the ovaries. 相似文献
102.
103.
104.
A case of cyclobenzaprine (flexeril) overdose and the resultant rhabdomyolysis is presented. A review of the range of clinical
toxicity, management of overdose is described. The similarity of cyclobenzaprine to the tricyclic antidepressant class is
emphasized; this report attempts to disseminate related information on this commonly prescribed centrally acting muscle relaxant. 相似文献
105.
The aim of our study was to determine the incidence, timing, and severity of vaginal stenosis in patients with carcinoma of the cervix who had received pelvic and/or vaginal radiotherapy as part of their treatment. We also sought to determine if there were any predisposing factors for the development of stenosis. A retrospective chart review was undertaken for all the patients diagnosed with carcinoma of the cervix between January 1, 1990, and December 31, 2000 and treated with pelvic and/or vaginal radiation at Westmead Hospital. Since January 1, 1990, data regarding vaginal stenosis has been prospectively recorded on all the patients. Data collected included patient demographics, stage of disease, treatments administered, and incidence, timing, and severity of vaginal stenosis. One hundred and eighty-eight patients were treated. Mean age was 58.6 years. Thirteen percent of patients had stage IB disease, 45% had stage II disease, 39.5% had stage III disease, and 1.5% had stage IV disease. One hundred and seventy-nine patients returned for follow-up, and data regarding vaginal toxicity were available in 98%. Twenty-seven percent had grade 1 toxicity (partial stenosis or shortening but not complete occlusion), and 11% had grade 2 (complete occlusion). Stenosis of any grade was noted at a mean of 9.6 months and median of 7.5 months (range, 26 days-5.6 years) from completion of treatment. The only prognostic factor associated with increased risk of stenosis was age greater than 50 years (odds ratio 2.26). Vaginal stenosis is a common complication of pelvic and vaginal radiotherapy, occurring in 38% of patients. Stenosis occurs most often in the first year after treatment. Patients over the age of 50 are most at risk. 相似文献
106.
107.
108.
Abstract: Background: Identification of risk drinking in expectant fathers may be helpful as an important part of efforts to minimize maternal alcohol use, and as an opportunity to inform them about a problematic practice during a critical developmental stage for the couple. The purpose of this study was to evaluate the T‐ACE screening questionnaire, which asks about t olerance to alcohol, being a nnoyed by other's comments about drinking, attempts to c ut down, and having a drink first thing in the morning (“ e ye‐opener”), in the male partners of pregnant women who themselves were T‐ACE positive. Methods: Two hundred fifty‐four male partners were asked to complete the T‐ACE embedded in a health survey, the Alcohol Use Disorders Identification Test (AUDIT), and other questions about their alcohol use in the past 30 days when their pregnant partners had a median gestation of 11.5 weeks (T1). After delivery, male partners again completed the T‐ACE and quantity‐frequency questions (T2). The predictive ability of the T‐ACE and AUDIT was compared, using risk drinking (>4 drinks/day or >14 drinks/week) as the criterion standard. Results: A substantial minority of male partners had risk drinking, 31 percent at T1 and 25 percent at T2. Although the AUDIT was better than the T‐ACE as an independent predictor of risk drinking, the latter was most accurate when the tolerance threshold exceeded 2 drinks, the same established for pregnant women. The sensitivity (T1 = 84.6%, T2 = 82.8%) and specificity (T1 = 43.8%, T2 = 51.1%) of the T‐ACE at this threshold compared favorably with those of the AUDIT at the standard cut point of 8. Conclusions: The T‐ACE may be a practical way for clinicians to identify risk drinking in both pregnant women and expectant fathers. (BIRTH 33:2 June 2006) 相似文献
109.
110.