eClinicalWorks, a provider of clinical information systems for medical practice networks, agreed to expand and extend its lease with Advance Realty Group at 114 and 112 Turnpike Road in the Westboro Executive Park. Under the new agreement, the company will lease 10,238 square feet at 114 Turnpike Road and expand into an additional 14,531 square feet at 112 Turnpike Road for a total commitment of 24,769 square feet, making it the park's largest tenant.