Analysis of information sources in references of the Wikipedia article "Nullpatsient" in Estonian language version.
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{{cite journal}}: CS1 hooldus: url-olek (link)The first identified case in a group of related cases of a particular communicable or heritable disease.
{{cite journal}}: CS1 hooldus: url-olek (link)The first identified case in a group of related cases of a particular communicable or heritable disease.