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James-Roberts, Ian St and Alvarez, M. and Csipke, Emese and Abramsky, Tanya and Goodwin, Jennifer and Sorgenfrei, Esther (2006) Infant Crying and Sleeping in London, Copenhagen and When Parents Adopt a Proximal Approach to Infant Care. Pediatrics, 117 (6). e1146-e1155. ISSN 10984275