Reference:
  Author: R H S R Roxburgh and S R Seaman and T Masterman and A E Hensiek and S J Sawcer and S Vukusic and I Achiti and C Confavreux and M Coustans and E le Page and G Edan and G V McDonnell and S Hawkins and M Trojano and M Liguori and E Cocco and M G Marrosu and F Tesser and M A Leone and A Weber and F Zipp and B Miterski and J T Epplen and A Oturai and P Soelberg Sorensen and E G Celius and N Tellez Lara and X Montalban and P Villoslada and A M Silva and M Marta and I Leite and B Dubois and J Rubio and H Butzkueven and T Kilpatrick and M P Mycko and K W Selmaj and M E Rio and M Sa and G Salemi and G Savettieri and J Hillert and D A S Compston
  Title: "Multiple Sclerosis Severity Score: using disability and disease duration to rate disease severity"
  Journal: Neurology
  Year: 2005
  Volume: 64
  Number: 7
  Pages: 1144-51
  DOI: 10.1212/01.WNL.0000156155.19270.F8
  PMID: 15824338
  URL: http://www.neurology.org/content/64/7/1144.abstract
  eprint: http://www.neurology.org/content/64/7/1144.full.pdf+html
