1. Macro trends in pharmaceutical innovation;Cohen;Discov. Med.,2005
2. CenterWatch, 2015. Plegridy (peginterferon beta-1a) [online]. Available at: 〈http://www.centerwatch.com/drug-information/fda-approved-drugs/drug/100028/plegridy-peginterferon-beta-1a〉, (accessed 01.01.15).
3. Clinicaltrials.gov, 2015. A Study for Patients with Multiple Sclerosis (MAESTRO-02). US Natl. Institutes Heal. Available at: 〈https://clinicaltrials.gov/ct2/show/NCT00870155?term=dirucotide&rank=1〉, (accessed 01.01.15).
4. Mechanism of action of oral fngolimod (FTY720) in multiple sclerosis;Chun;Clin. Neuropharmacol.,2010
5. Disease-modifying treatments for progressive multiple sclerosis;Comi;Mult. Scler.,2013