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IMPORTANT SHIPPING INFORMATION: Sigma will be closed on 4 July 2025 in observance of the USA holiday. Book products will resume shipping on 7 July 2025. Jewelry products will resume shipping on 14 July 2025. We apologize for any inconvenience this may cause.
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Professional Practice Models
Caritas Coaching
Nurses have historically been the heart of healing in the healthcare system. But today’s care providers are often ill-prepared for the heavy toll of their day-today workload and its impact on their ability to be fully present for others
From $49.95
Johns Hopkins Nursing Professional Practice Model
Achievement is the culture in which we are immersed, the air we breathe.
From $49.95
