ustekinumab,natalizumab
janssen,biogen
['multiple sclerosis', 'atopic dermatitis ', 'derm', 'psoriatic arthritis', 'natalizumab', 'crohn', 'rheumatoid,arthritis', 'ustekinumab', 'ibd']
great overview of drug sequencing in crohn s #ecco2023 
Consultant Gastroenterologist at St George’s Hospital & St George’s University of London specialist in Inflammatory Bowel Disease and gastrointestinal infection