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Johan, Muhammad Phetrus, Dario Agustino Nelwan, Imeldy Prihatni Purnama, Ira Nong, Khrisna Yudha, and Vicky William Paundanan. "Double Central Ray Amputation of the Third and Fourth Digits for Recurrent Giant Cell Tumors of the Hand: A Case Report." Int J Surg Case Rep 2021.

Johan, Muhammad Phetrus, et al. "Double Central Ray Amputation of the Third and Fourth Digits for Recurrent Giant Cell Tumors of the Hand: A Case Report." Int J Surg Case Rep 2021.