function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Boulard, Michel', 2],
    ['Hertach, Thomas', 1],
    ['Hertach, Thomas & Nagel, Peter', 4],
    ['Hertach, Thomas & Trilar, Tomi & Wade, Elizabeth J.', 2],
    ['Mozaffarian, Fariba', 1],
    ['Powell, Erin C. & Halbert, Susan E. & Deeter, Lily', 1],
    ['Price, Benjamin Wills & Allan, Elizabeth Louise & Marathe, Kiran', 4],
    ['Puissant, Stéphane & Boulard, Michel', 1],
    ['Puissant, Stéphane & Gurcel, Kevin', 3],
    ['Sanborn, Allen F.', 10],
    ['Sanborn, Allen F. & Phillips, Polly K. & Gilllis, Philip', 3],
    ['Sueur, Jérôme & Puissant, Stéphane', 2],
    ['Trilar, Tomi & Gjonov, Ilia & Gogala, Matija', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=39)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);