Cochrane Russia at KFU,
http://www.cochrane.org/ru/CD007480/dobavki-vitamina-mladencam-v-vozraste-ot-1-do-6-mesyacev-dlya-profilaktiki-smertnosti-i
http://www.cochrane.org/ru/CD007480/dobavki-vitamina-mladencam-v-vozraste-ot-1-do-6-mesyacev-dlya-profilaktiki-smertnosti-i
http://onlinelibrary.wiley.com/doi/10.1002/14651858.CD007480.pub3/abstract;jsessionid=56E64F6552D5976A191464BD906A216F.f04t01
http://www.cochrane.org/ru/CD007480/dobavki-vitamina-mladencam-v-vozraste-ot-1-do-6-mesyacev-dlya-profilaktiki-smertnosti-i