function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Carapia-Ruiz, Vicente Emilio & Sánchez-Flores, Oscar Ángel', 2],
    ['Dooley Iii, John W. & Lambrecht, Susan & Honda, Jeffrey', 6],
    ['Manzari, Shahab & Quicke, Donald L. J.', 1],
    ['Martin, Jon H.', 1],
    ['Martin, Jon H. & Mound, Laurence A.', 1],
    ['Polaszek, Andrew & Gill, Raymond', 2],
    ['Sánchez-Flores, Oscar Ángel & Carapia-Ruiz, Vicente Emilio', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    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);