CONSERVATIVE SURGERY

\kənsˈɜːvətˌɪv sˈɜːd͡ʒəɹi], \kənsˈɜːvətˌɪv sˈɜːd‍ʒəɹi], \k_ə_n_s_ˈɜː_v_ə_t_ˌɪ_v s_ˈɜː_dʒ_ə_ɹ_i]\
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1920 - A practical medical dictionary.
By Stedman, Thomas Lathrop
 
1916 - Appleton's medical dictionary
By Smith Ely Jelliffe