Artikel Jurnal
Erwin, author
2002
Artikel Jurnal
World Health Organization, 2003
Buku Teks
edited by Jamie H. Von Roenn, Judith A. Paice, Michael E. Preodor
Lange Medical Books/McGraw-Hill, 2006
Buku Teks
by Charles Seth Landefeld ... [and others]
McGraw-Hill, 2004
Buku Teks