function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Angyal, Dorottya & Chavez-Solis, Efrain M.', 3],
    ['Angyal, Dorottya & Solis, Efrain Chavez & Magana, Benjamin', 1],
    ['Ariyama, Hiroyuki', 2],
    ['Barnard, J. Laurens', 1],
    ['Barnard, J. Laurens & Karaman, Gordan S.', 2],
    ['Myers, A', 2],
    ['Myers, Alan A. & Lowry, James K. & Billingham, Zac', 2],
    ['Perez-Gelabert, Daniel E.', 1],
    ['Springthorpe, R. T. & Lowry, J. K.', 2],
    ['Vonk, Ronald & Gable, Michael', 1],
    ['White, Kristine N. & Sir, Sally J.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);