Comment on

• "To Randomize, or Not to Randomize, That is the Question".

  Ruperto N, Martini A, Pistorio A; Paediatric Rheumatology International Trials Organisation. Ruperto N, et al. Arthritis Rheumatol. 2021 Oct;73(10):1776-1779. doi: 10.1002/art.41912. Epub 2021 Aug 26. Arthritis Rheumatol. 2021. PMID: 34196499 No abstract available.
• The importance of rigorous methods in observational comparative effectiveness studies of rare diseases: comment on the article by Ruperto et al.

  Kimura Y, Ong MS, Tomlinson G, Ringold S, Schanberg LE, Feldman BM, Dennos A, Del Gaizo V, Murphy KL, Natter M. Kimura Y, et al. Arthritis Rheumatol. 2022 May;74(5):912-913. doi: 10.1002/art.42047. Epub 2022 Mar 31. Arthritis Rheumatol. 2022. PMID: 34905294 No abstract available.