Only first author is kept with as.data.frame.Bibentry if BibEntry contains a single citation

[damonbayer]

After fixing #10 RefManageR can convert a single citation BibEntry with multiple authors to a data.frame without producing an error, but the conversation does work correctly. Only the first author is kept in the data.frame.

library(RefManageR)
pmids <- GetPubMedByID(c("15689760", "3586818"))
pmid <- GetPubMedByID(c("15689760"))

print(pmids[1])
#> [1] N. A. Goldstein, E. M. Mandel, M. Kurs-Lasky, et al. "Water
#> precautions and tympanostomy tubes: a randomized, controlled
#> trial". Eng. In: _The Laryngoscope_ 115.2 (Feb. 2005), pp. 324-30.
#> ISSN: 0023-852X. DOI: 10.1097/01.mlg.0000154742.33067.fb. PMID:
#> 15689760.
print(pmid)
#> [1] N. A. Goldstein, E. M. Mandel, M. Kurs-Lasky, et al. "Water
#> precautions and tympanostomy tubes: a randomized, controlled
#> trial". Eng. In: _The Laryngoscope_ 115.2 (Feb. 2005), pp. 324-30.
#> ISSN: 0023-852X. DOI: 10.1097/01.mlg.0000154742.33067.fb. PMID:
#> 15689760.

# First entry in pmids is the same as the lone entry in pmid

# Convert to data frames
pmids.df <- as.data.frame(pmids)
pmid.df <- as.data.frame(pmid)

pmids.df$author[1]
#> [1] "Nira A Goldstein and Ellen M Mandel and Marcia Kurs-Lasky and Howard E Rockette and Margaretha L Casselbrant"
pmid.df$author
#> [1] "Nira A Goldstein"

# Only the first author is kept from the single BibEntry in the converted data.frame