A small healthcare unit wants to have a table with treatment options. The treatment offers are based on the International Statistical Classification of Diseases and Related Health Problems.

Create a table called treatment with the following columns:

• name - a text of up to 100 characters,
• disease_chapter - a text of up to 4 characters,
• disease_block - a three-letter code,
• price - a decimal number with up to 6 digits, two of which are after the decimal point.

The columns: name, disease_chapter, disease_block form the primary key. If no price is provided, the default value should be 0.00.