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. 2011 Feb 16;2011(2):CD003993. doi: 10.1002/14651858.CD003993.pub3

Guzman 1988.

Methods Design: 2‐arm parallel trial with a no‐treatment control group
 No. of centres: unclear
 Recruitment and setting: Medical Institute Oncology Service and Guernes Center, Buenos Aires, Argentina
 Recruitment period: 12/83‐12/85
 Observation period: up to 42 months
 Ethical approval: unclear
Participants No. of patients: 32 randomised, 32 evaluated 
 Condition: colorectal cancer, Dukes B2, C1, C2 after surgery; colon cancer (29), rectal cancer (4)
 Demographics: women: 15, men: 17; mean age: women: 58.8, men: 61.8 years
 Informed consent: unclear
Interventions Interventional treatment: thymostimulin; dose/schedule: 25 mg/m² i.m. every chemotherapy cycle (d9‐13,17,19, 24, 26)
 Control treatment: no treatment
 Basic treatment : 5‐fluoruracil 600 mg/m² i.v. (d1,d8), lomustine 60 mg/m² p.o. (d1); every 3 weeks; for 6 months
Outcomes Outcome measures: survival, toxicity (AEs of chemo‐/radiotherapy), other
Notes Participants: no reporting of distribution of risk factors between groups
 Outcomes: side effects of chemotherapy were not scored using standardized criteria