The participating researchers may suggest members of their own research groups or from groups working on GRK-related topics to join GRK2504. Doctoral researchers in natural sciences and medicine, early postdocs, and clinicians are eligible to apply and participate in the annual recruitment colloquia in autumn. Selection criteria are complementarity to the research programme, excellence of the project, qualification and motivation of the applicant. The number of additional members to be admitted is determined annually based on the variable number of doctoral researchers in medicine and clinician scientists fully participating in the qualification programme, e.g. beyond the period of personal funding (up to a total of 30 GRK2504 training members). Selected candidates are entitled and committed to participate in all activities of the programme.