Singh, RiteshGupta, Sanjeev Kumar2007-05-182009-06-032007-05-182009-06-032007-05-18Singh R, Gupta SK. Payments for healthcare: do they aggravate poverty? National Medical Journal of India. 2007 May-Jun; 20(3): 139-41http://imsear.searo.who.int/handle/123456789/119222engPayments for healthcare: do they aggravate poverty?Comment