title: Commentary: Balancing quantity and quality when designing epidemiological studies.
authors.affiliation: Royal Free Centre for HIV Medicine & Department of Primary Care & Population Sciences, Royal Free & University College Medical School, University College London, London, UK.
authors.forename: Andrew
authors.initials: A
authors.lastname: Phillips
mesh_terms: D003625:Data Collection; D004781:Environmental Exposure; D015340:Epidemiologic Research Design; D020022:Genetic Predisposition to Disease; D006801:Humans; D018401:Sample Size