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Survival analysis versus event count
  1. Laurent Arnaud1,
  2. Herve Devilliers2,
  3. Zahir Amoura1
  1. 1Department of Internal Medicine, AP-HP, Groupe Hospitalier Pitie-Salpetriere, Institut E3M, INSERM, U1135, CIMI, Sorbonne Universites, UPMC Univ Paris 06, Paris, France
  2. 2University Hospital of Dijon, Clinical Investigation Centre–Clinical, Epidemiology/Clinical Trials, INSERM, Dijon, France
  1. Correspondence to Dr Laurent Arnaud, Department of Internal Medicine, AP-HP, Groupe Hospitalier Pitie-Salpetriere, Institut E3M, INSERM, U1135, CIMI, Sorbonne Universites, UPMC Univ Paris 06, Paris F-75013, France

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We read with great interest the article ‘The prognostic value of routinely performed minor salivary gland assessments in primary Sjogren’s syndrome’ by Risselada et al.1

One of the main findings of the paper is that lymphocytic focus score (LFS) ≥3 contributes significantly and independently to …

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