INS and type 2 diabetes mellitus: A larger (1200 women), randomized, double-blinded, multi-centre clinical trial of insulin plus metformin vs insulin plus placebo for the treatment of type 2 diabetes complicating pregnancy (medical optimisation and management of pregnancies with overt type 2 diabetes study, MOMPOD study) is currently underway in the US (https://clinicaltrials.gov/ct2/show/NCT02932475, accessed 20th August 2021).