Extract Profissional Formation from 'Lattes' XML file.
getFormacaoDoutorado(curriculo)
'Lattes' XML imported as `xml2::read_xml()`.
data frame
Curriculum without this information will return NULL.
if(interactive()) {
# to import from one curriculum
# curriculo <- xml2::read_xml('file.xml')
# getFormacaoDoutorado(curriculo)
}