life-cycle assessment
life-cycle cost
life-cycle model
life-cycle stages
life-cycle theory
life-history
life-history adaptations
life-history attributes
life-history characteristics
life-history characters
life-history data
life-history evolution

life-history models
life-history parameters
life-history patterns
life-history stages
life-history strategies
life-history tactics
life-history theory
life-history trade-offs
life-history traits
life-history types
life-history variation
life-long follow-up
life-long immunosuppression

life-long learning
life-saving intervention
life-saving treatment
life-style factors
life-sustaining treatment
life-table analysis
life-threatening arrhythmias
life-threatening bleeding
life-threatening complication
life similar
life situation
life skills
life span

life stages
life stories
life strategies
life stress
life stressors
life style
life support
life table analysis
life tables
life tests
life threat
life threatening
life time

life traits
life transition
life values
life variables
life work
life years