function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Curran, Stephen S. & Tkach, Vasyl V. & Overstreet, Robin M.', 2],
    ['Hernández-Mena, David Iván & Lynggaard, Christina', 1],
    ['Margarita Ostrowski de Núñez & Nathalia J. Arredondo', 2],
    ['Razo-Mendivil, U. & Mendoza-Garfias, Berenit', 1],
    ['Scholz, Tomaš & Aguirre-Macedo, M. Leopoldina', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=7)',
    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);