function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cadena-Castañeda, Oscar J.', 21],
    ['Cadena-Castañeda, Oscar J. & Gutiérrez, Yeisson & Bacca, Tito', 1],
    ['Desutter-Grandcolas, Laure', 2],
    ['Frank, J. H. & McCoy, Earl D.', 4],
    ['Frank, J. H. & Vicente, N. E. & Leppla, N. C.', 4],
    ['Kim, Tae-Woo & Puskás, Gellért', 1],
    ['Ma, Libin & Zhang, Yalin', 5],
    ['Prasanna, Vimalanathan Arun & Anbalagan, Sankarappan', 1],
    ['Rodríguez, Fernando & Heads, Sam W.', 3],
    ['Shah, Manjur', 1],
    ['Sperber, Carlos Frankl', 3],
    ['Tan, Ming Kai', 13],
    ['Tan, Ming Kai & Kamaruddin, Khairul Nizam', 7],
    ['Yong, Sheyla & Perez-Gelabert, Daniel E.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=67)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);