Mansoor Zeeshan et al. 2023. Early Asymptomatic Decline in Left Ventricular Ejection Fraction in Adult Cancer Patients Receiving Trastuzumab. Pakistan Armed Forces Medical Journal. 73, 4 (Jul. 2023), 1204–1207. DOI:https://doi.org/10.51253/pafmj.v73iSUPPL-1.8608.