The removal of LEUKOCYTES from BLOOD to reduce BLOOD TRANSFUSION reactions and lower the chance of transmitting VIRUSES. This may be performed by FILTRATION or by CYTAPHERESIS.
Excision of the prepuce of the penis (FORESKIN) or part of it.
Health as viewed from the perspective that humans and other organisms function as complete, integrated units rather than as aggregates of separate parts.
Predetermined sets of questions used to collect data - clinical data, social status, occupational group, etc. The term is often applied to a self-completed survey instrument.