function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Altamirano-Benavides, Marco & Zaher, Hussam & Lobo, Luciana', 1],
    ['Camper, Jeffrey D. & Torres-Carvajal, Omar & Ron, Santiago R.', 2],
    ['Chavez, German & Vasquez, Diego', 1],
    ['Chávez, Germán & Catenazzi, Alessandro', 1],
    ['Chávez, Germán & Malqui, Jose & Catenazzi, Alessandro', 8],
    ['Diago-Toro, María F. & García-Cobos, Daniela', 1],
    ['Doan, Tiffany M. & Castoe, Todd A.', 3],
    ['Llanqui, Irbin B. & Y. Salas, Cinthya & Oblitas, Melissa P.', 1],
    ['Ribeiro-Júnior, Marco A. & Amaral, Silvana', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);