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Leungtongkum, P.; Piniwatsoontorn, S.; Somnasang, P.; Kanato, M.; Ratanasiri, A.; Maskasame, S.; Sinsupan, N.; Jitjareuntum, M. Study groups of mother or relatives whose level of education are higher Than Prathom 4 which normally look after children better than the Similar Groups who have Prathom 4 education or lower; and study different factors which influence the growth of pres. SRIMEDJ 2013, 2, 23-30.