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David T. Felson, Jennifer J. Anderson, Maarten Boers et al. · Arthritis & Rheumatism · 1995 · 2.8K citations

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Y P M Goekoop-Ruiterman, Jeska K de Vries‐Bouwstra, Cornelia F Allaart et al. · Arthritis & Rheumatism · 2005 · 1.5K citations · Full text

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TUTORIAL IN BIOSTATISTICS PROPENSITY SCORE METHODS FOR BIAS REDUCTION IN THE COMPARISON OF A TREATMENT TO A NON-RANDOMIZED CONTROL GROUP

Ralph B. D’Agostino · 1998 · 505 citations

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Importance of placement of intra-articular steroid injections.

A Jones, Marian Regan, Joanna Ledingham et al. · BMJ · 1993 · 447 citations · Full text

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