To compare the clinical effect of laparoscopic appendectomy (la) and open appendectomy (OA), and provide relevant basis for choosing a proper operation method.

目的比较腹腔镜阑尾切除术(LA术)和传统术式(OA术)临床效果，为选择正确的手术方法提供相关依据。

youdao

Open Access (OA) is the provision of free access to peer-reviewed, scholarly and research information to all.

UNESCO: MEDIA SERVICES

Is a compendium of simple factual lists about open access (OA) to science and scholarship, maintained by the OA community at large.

UNESCO: Global Open Access Portal

Building capacities in Member States for Open Access is a necessary but not sufficient condition for promotion of OA. Creating an enabling policy environment in Member States for OA is therefore a priority.

UNESCO: OFFICE IN TASHKENT