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Claire Bléchet; Pierre Lecomte; Loïc De Calan; Patrice Beutter; Serge Guyétant. (2007). Expression of sex steroid hormone receptors in C cell hyperplasia and medullary thyroid carcinoma. , 450(4), 433–439. doi:10.1007/s00428-007-0379-6 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research