TY - RPRT TI - Ferrous sulfate tolerance test: a case report. AU - O H Youssef AU - A J Drake AU - K M Shakir PY - 1999 DO - 10.7326/0003-4819-130-12-199906150-00015 UR - https://pubmed.ncbi.nlm.nih.gov/10383361/ ID - 10383361 ER -