Fig. 3From: Relationship between caffeine intake and infertility: a systematic review of controlled clinical studiesEvidence Mapping of caffeine intake for infertility. a Caffeine intake > 100 mg/d vs ≤100 mg/d. b Caffeine intake > 200 mg/d vs ≤100 mg/d. c Caffeine intake > 400 mg/d vs ≤100 mg/dBack to article page