Rationale and Design of Khuzestan Vitamin D Deficiency Screening Program in Pregnancy: A Stratified Randomized Vitamin D Supplementation Controlled Trial

Maryam Rostami   ^{1 *} , MSc, PhD ;   Fahimeh Ramezani Tehrani   ² , MD ;   Masoumeh Simbar   ^{1 *} , PhD ;   Farhad Hosseinpanah   ^{3 *} , MD ;   Hamid Alavi Majd   ⁴ , PhD

¹ Department of Reproductive Health and Midwifery, Faculty of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran, Iran

² Reproductive Endocrinology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran

³ Obesity Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran

⁴ Department of Biostatistics, Faculty of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran

*these authors contributed equally