How do I contact OT Practice®? February 07, 2019 12:38 Updated Follow Call 301-652-2682 or send an e-mail to email@example.com. Related articles May I make copies of an OT Practice® article? How do I submit an article to OT Practice®? How do I get back issues of OT Practice®? How do I become an occupational therapist (OT) or occupational therapy assistant (OTA)? Some milestones, like crawling, were not included in the CDC Developmental Surveillance Milestone Checklists. Does this mean they are no longer considered milestones?