Eligible women ( 18-37 years ) , with World Health Organization Group II anovulatory infertility , were randomized to receive r-hFSH ( starting daily dose : 75 IU ) as a chronic low-dose ( CLD ) ( 37.5 IU dose increase on Day 14 ) or low-dose ( LD ) ( 37.5 IU dose increase on Day 7 ) protocol if no follicles were 10 mm .