2005-            Project Director and Co-Investigator:  “NHS/HPFS Folic Acid Prevention Trial”  (PI: Dr. Edward Giovannucci, Harvard School of Public Health (HSPH) and Harvard Medical School)

2009-            Project Director and Co-Investigator: “Prostate Cancer Analyses” of the “Pooling of Prospective Studies of Diet and Cancer Consortium” (PI: Dr. Stephanie Smith-Warner, HSPH)

2011-            Co-Investigator: “Pooled analyses of plasma vitamin D and breast and colorectal cancer”   (“Pooling of Prospective Studies of Diet and Cancer Consortium”) (PI: Dr. Stephanie Smith-Warner, HSPH)

2013-           Co-Investigator: Genetics and Epidemiology of Colorectal Cancer Consortium (GECCO) (studies from North America, Australia and Europe, over 40,000 participants with GWAS data; coordinating center Fred Hutchinson Cancer Research Center, Seattle, WA, PI Dr. Riki Peters). Role: Co-investigator (gene/diet or lifestyle interactions (GXE))

2011- Molecular Epidemiology Working Group; Co-Investigator: “Risk factors for colorectal cancer by molecular characteristics of tumor “
(PIs: Dr. Charles Fuchs and Dr. Shuji Ogino, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA)