function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bribiesca-Contreras, Guadalupe & Dahlgren, Thomas G.', 1],
    ['Chan, Benny K. K. & Prabowo, Romanus Edy & Lee, Kwen-Shen', 4],
    ['Pitriana, Pipit & Jones, Diana S. & Corbari, Laure', 3],
    ['Shalaeva, Kate & Boxshall, Geoff', 11],
    ['Shalaeva, Kate & Newman, William A.', 2],
    ['Young, Paulo S.', 2],
    ['Zhibin, Gan & Xinzheng, Li', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);