Functional constipation symptoms and complementary feeding methods: A randomized clinical trial Renata Oliveira Neves; Leandro Meirelles Nunes; Larissa de Oliveira Silveira; Marcela Reckziegel Lima; Paula Ruffoni Moreira; Juliana Rombaldi Bernardi;

Psychological and social impact on parents of children with feeding difficulties Ana Fernández de Valderrama Rodríguez; Carlos Ochoa Sangrador; Consuelo Pedrón Giner; Jesús Sánchez Hernández;

Blood and faecal lead levels in children with various functional gastrointestinal disorders Nergiz Sevinc; Nam¿k Bilici; Eylem Sevinc; Erkan Dogan;