function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cisneros-Heredia, Diego F. & Gluesenkamp, Andrew G.', 1],
    ['Gluesenkamp, Andrew G. & Guayasamin, Juan M.', 1],
    ['Mueses-Cisneros, Jonh Jairo & Yánez-Muño, Mario Humberto', 1],
    ['Paez-Moscoso, Diego J. & Guayasamin, Juan M.', 1],
    ['Reyes-Puig 1,2, Juan Pablo & Reyes-Puig 1,3,4, Carolina', 1],
    ['Yánez-Muñoz, Mario & Altamirano-Benavides, Marco', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=6)',
    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);