function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baptista, Ninda L. & António, Telmo & Branch, William R.', 1],
    ['Conradie, W. & Bills, R. & Branch, W. R.', 2],
    ['Conradie, Werner & Keates, Chad & Verburgt, Luke', 3],
    ['Kehlmaier, Christian & Kuchling, Gerald & Shea, Glenn', 2],
    ['Pauwels, Olivier S. G. & Morelle, Stephan & Albert, Jean-Louis', 1],
    ['Páez, Vivian P. & Bock, Brian C. & Alzate-Estrada, Diego A.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=10)',
    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);