AU - Kabakoglu Unsur, Emel TI - Vitamin D levels of the healthy infants using oral spray or drop form of vitamin D supplement in the first year of life PT - Journal Article DP - 2021 TA - North Clin Istanb PG - 31-36 VI - 8 IP - 1 AID - 10.14744/nci.2020.09471 [doi] PMID - 33623870 4100 - https://dx.doi.org/10.14744/nci.2020.09471 SO - Northern Clinics of İstanbul, 2021 8(1):31