Pettifor, John M2007-12-082009-05-272007-12-082009-05-272007-12-08Pettifor JM. Vitamin D and/or calcium deficiency rickets in infants and children: a concern for developing countries? Indian Pediatrics. 2007 Dec; 44(12): 893-5http://imsear.searo.who.int/handle/123456789/12757engCalcium --deficiencyCalcium Metabolism DisordersChildChild WelfareChild, PreschoolDeveloping CountriesFemaleHealth StatusHumansIndia --epidemiologyInfantInfant WelfareMaleRickets --epidemiologyVitamin D DeficiencyVitamin D and/or calcium deficiency rickets in infants and children: a concern for developing countries?Comment