function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Khudhir, Manda & Hodda, Mike & Nicholas, Evelyn', 2],
    ['Shimada, Daisuke & Kakui, Keiichi', 4],
    ['Shimada, Daisuke & Kakui, Keiichi & Kajihara, Hiroshi', 1],
    ['Shimada, Daisuke & Takeda, Naoya & Tsune, Akira', 1],
    ['Zograf, Julia K. & Trebukhova, Yulia A. & Pavlyuk, Olga N.', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=12)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);