Category Nuances for renal_dialysis:

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

Simple Categories for renal_dialysis:

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