Category Nuances for renal_dialysis:

• technological,
• episodic,
• complex,
• tertiary,
• medical,
• specialized,
• critical,
• invasive,
• expensive,
• regular,
• essential,
• clinical,
• vital,
• infrequent,

Simple Categories for renal_dialysis:

• event,
• procedure,
• care,
• service,