function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Broad, Gavin R. & Shaw, Mark R. & Godfray, H. Charles J.', 4],
    ['Figueroa, José Isaac & Sánchez-García, José Antonio', 2],
    ['Kula, Robert R.', 1],
    ['Nees von Esenbeck, C. G.', 1],
    ['Oliveira, Franciélle Dias De & Penteado-Dias, Angélica Maria', 7],
    ['Peris-Felipo, Francisco Javier & Belokobylskij, Sergey A.', 1],
    ['Singh, Longjam Roni Kumar & Chandra, Kailash & Gupta, Devanshu', 1],
    ['Souza-Gessner, Carolina Da Silva', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);