1. Department of Biostatistics; Office of Energetics and Nutrition Obesity Research Center; University of Alabama at Birmingham; Birmingham AL USA
2. Department of Health Behavior; University of Alabama at Birmingham; Birmingham AL USA
3. Division of Biostatistics; Department of Pharmacology and Experimental Therapeutics; Thomas Jefferson University; Philadelphia PA USA
4. Department of Biostatistical Sciences; Wake Forest University Health Sciences; Winston-Salem NC USA