PMC:7210464 / 91428-91515
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T882","span":{"begin":0,"end":87},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"We first estimate the parameters in Eq. 4 by 2SLS and obtain the residuals 𝜖^n1,⋯,𝜖^nT."}