function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Fazan, Laurence & Dorchin, Netta & Giriens, Sophie', 1],
    ['Felt, E. P.', 2],
    ['Harris, Keith M.', 1],
    ['Jiao, Ke-Long & Wang, Hao & Huang, Jun-Hao & Han, Pei-Jin', 2],
    ['Maia, Valéria Cid', 2],
    ['O’Hara, James E. & Cerretti, Pierfilippo & Pape, Thomas', 1],
    ['Siddiqui, M. S. & Najam, K. A. A. & Deshpande, V. D.', 2],
    ['Sinclair, Bradley J.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=12)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);