function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Carpintero, Diego Leonardo & Dellapé, Pablo Matías', 1],
    ['Forero, Dimitri', 1],
    ['Heiss, Ernst & B, Viktor', 3],
    ['Heiss, Ernst & Eckelt, Andreas & Lederwasch, Manfred', 1],
    ['Montemayor, Sara Itzel & Dellapé, Pablo Matías', 1],
    ['Noack, Ann E. & Cassis, Gerasimos & Rose, Harley A.', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);