Pampaloni, B; Bartolini, E; Barbieri, M; Piscitelli, P; Di Tanna, GL; Giolli, L; Brandi, ML; (2013) Validation of a food-frequency questionnaire for the assessment of calcium intake in schoolchildren aged 9-10 years. Calcified tissue international, 93 (1). pp. 23-38. ISSN 0171-967X DOI: https://doi.org/10.1007/s00223-013-9721-y Full text not available from this repository.