Supplementary material - Low-dose methotrexate use and safety for older patients with bullous pemphigoid and impaired renal function: a cohort study

Should methotrexate be avoided in patients with bullous pemphigoid and impaired renal function? We investigated its use and safety among patients with different levels of renal function at the time of treatment initiation. The supplementary material of the letter published in the Journal of the American Academy of Dermatology (JAAD) is uploaded here.