Institute of Clinical Pharmacology;
School of Pharmaceutical Sciences;
Sun Yat-sen University;
Guangzhou 510000;
Guangdong Province;
China;
Department of Gastroenterology;
the Sixth Affiliated Hospital;
Sun Yat-sen University;
Guangzhou 510000;
Guangdong Province;
China;
Center for Pharmacogenetics and Department of Pharmaceutical Sciences;
University of Pittsburgh;
Pittsburgh;
PA 15261;
United States;
School of Public Health;
Sun Yat-sen University;
Guangzhou 510000;
Guangdong Province;
China;
Crohn’s; disease; Thioguanine; nucleotide; levels; Nucleoside; diphosphatelinked; moiety; X-type; motif; 15; Thiopurine-induced; leukopenia;