The Biostatistics Student Consulting Center (BSCC) is an organization managed by biostatistics Ph.D. students at the Harvard T.H. Chan School of Public Health's Department of Biostatistics. The BSCC provides FREE help to students on statistics questions that arise outside of the classroom. Schedule a one-on-one consultation by submitting an online inquiry at https://www.hsph.harvard.edu/biostatistics/bscc/.
Harvard Catalyst also offers biostatistics advice for Harvard researchers, with a particular focus on helping researchers engaged in translational research at Harvard-affiliated hospitals. You can request a free consultation here: https://catalyst.harvard.edu/biostatistics/consultations/