Agarwal, R K2008-08-042009-05-312008-08-042009-05-312008-08-04Agarwal RK. Why physician's sample? Else they are trade promotional material! Journal of the Indian Medical Association. 2008 Aug; 106(8): 543http://imsear.searo.who.int/handle/123456789/98262engAdvertising as TopicDrug IndustryDrug Prescriptions --economicsEthics, MedicalHumansPharmaceutical Preparations --economicsPhysiciansWhy physician's sample? Else they are trade promotional material!Letter