The study will be proposed to all the patients diagnosed with NHL, MM and CLL aged between 20 and 80 years old, without HIV infection and history of bone marrow transplant. If the patients agree to participate, a clinical research technician or a physician will give them a 2-hour questionnaire on their past occupational and exposures to toxic products. This filled questionnaire will then be interpreted by a specialized doctor to evaluate the exposition to each toxic products.