function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dela Paz, Erica Silk P. & Lopez, Mark Louie D.', 1],
    ['Gutiérrez Aguirre, Martha Angélica & Suárez-Morales, Eduardo', 1],
    ['Gutiérrez-Aguirre, M. A. & Suárez-Morales, E.', 1],
    ['Ishida, Teruo', 1],
    ['Suárez-Morales, Eduardo & Gutiérrez-Aguirre, Martha A.', 1],
    ['Suárez-Morales, Eduardo & Mendoza, Fredy & Mercado-Salas, Nancy', 1],
    ['Tang, Danny & Knott, Brenton', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=7)',
    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);