A Florida couple is accusing the fertility clinic they used for IVF of negligence after a blood test revealed the clinic used an unidentified man’s sperm to create their daughter’s embryo. ABC News' Hanna Battah has the story. ▻ ↧ Video Couple sues fertility clinic after alleged specimen mix-up Natalie and Joshua Strong are accusing Brown Fertility Associates of negligence for using an unidentified man's sperm to create their embryo.