<style class="in-text" default-locale="en-US" version="1.0" demote-non-dropping-particle="sort-only"><!-- This style was edited with the Visual CSL Editor (http://editor.citationstyles.org/visualEditor/) --><info><title>doktorat oli</title><id>http://www.zotero.org/styles/doktorat-oli</id><link href="http://www.zotero.org/styles/doktorat-oli" rel="self"/><link href="http://www.zotero.org/styles/acta-neurochirurgica" rel="template"/><link href="http://www.jfrailtyaging.com/instructions-for-authors.html" rel="documentation"/><author><name>Sebastian Karcher</name></author><category citation-format="numeric"/><category field="medicine"/><issn>2260-1341</issn><summary>Springer Vancouver style - alphabetical</summary><updated>2015-03-20T22:45:24+00:00</updated><rights license="http://creativecommons.org/licenses/by-sa/3.0/">This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 License</rights></info><sort><key variable="type"/><key macro="author"/></sort><macro name="author"><names variable="author" suffix=":"><name delimiter-precedes-last="always" et-al-use-first="19" initialize-with="." name-as-sort-order="all" sort-separator=" "/><label form="short" strip-periods="true" prefix=" (" suffix=")"/><substitute><names variable="editor"/><names variable="translator"/></substitute></names></macro><macro name="editor"><text term="in" text-case="capitalize-first" suffix=", "/><names variable="editor"><name sort-separator=" " initialize-with="" name-as-sort-order="all" delimiter=", " delimiter-precedes-last="always"/><label form="short" strip-periods="true" prefix=" (" suffix=")"/></names></macro><macro name="edition"><choose><if is-numeric="edition"><group delimiter=" "><number variable="edition" form="ordinal"/><text term="edition" form="short" strip-periods="true"/></group></if><else><text variable="edition"/></else></choose></macro><macro name="title"><choose><if type="book"><group delimiter=", " suffix=". "><text variable="title"/><text macro="edition"/></group></if><else><text variable="title" suffix=". "/></else></choose></macro><macro name="publisher"><group delimiter=", "><text variable="publisher"/><text variable="publisher-place"/></group></macro><macro name="year-date"><date variable="issued"><date-part name="year" suffix=","/></date></macro><citation collapse="citation-number"><sort><key variable="author" names-min="1"/></sort><layout prefix="[" suffix="]" delimiter=", "><text variable="citation-number"/></layout></citation><bibliography et-al-min="7" et-al-use-first="3" second-field-align="flush"><layout><text variable="citation-number" suffix=". "/><group delimiter=". "><text macro="author"/><text macro="title"/></group><choose><if type="chapter paper-conference" match="any"><text macro="editor"/><group delimiter=". "><group prefix=" " delimiter=", "><text variable="container-title" form="short"/><text macro="edition"/></group><text macro="year-date"/><group><text macro="publisher"/><group delimiter=" "><label variable="page" form="short" strip-periods="true"/><text variable="page"/></group></group></group></if><else-if type="article-journal"><group delimiter=" "><group delimiter=" "><text variable="container-title" form="short" strip-periods="true" suffix="."/><text macro="year-date"/></group><group><text variable="volume" suffix=", "/><text variable="page"/></group></group></else-if><else-if type="bill book graphic legal_case legislation motion_picture report song" match="any"><group delimiter=". "><text macro="year-date"/><text macro="publisher"/></group></else-if><else-if type="webpage"><group><text variable="container-title" suffix=". "/><text variable="URL" suffix=". "/><date variable="accessed"><date-part prefix="Accessed " name="day" suffix=" "/><date-part name="month" form="short" suffix=" " strip-periods="true"/><date-part name="year"/></date></group></else-if><else-if type="thesis"><group delimiter=". "><text macro="year-date"/><group delimiter=", "><text variable="genre"/><text variable="publisher"/></group></group></else-if><else><group><group delimiter=". "><text variable="container-title" form="short" suffix=" "/><text macro="year-date"/><text macro="publisher"/></group><group prefix=", " delimiter=": "><text variable="volume"/><text variable="page"/></group></group></else></choose></layout></bibliography><bibliography name-delimiter="doktorat oli"><layout/></bibliography></style>

There are errors in your style:

1) In the end you have another bibliography node, which you should just delete, i.e. <bibliography name-delimiter="doktorat oli"><layout/></bibliography>
2) There is a sort node in the beginning, after the info, which should be moved under the bibliography node, i.e. instead of ...
</info>
<sort>
<key variable="type"/>
<key macro="author"/>
</sort>
<macro name="author">
...
you want something like <bibliography et-al-min="7" et-al-use-first="3" second-field-align="flush">
<sort>
<key macro="author"/>
</sort>
<layout>