function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cornejo, Laura Gabriela & Molas, Bárbara Mariana Corró', 2],
    ['Elsaye, Ayman K. & Ogata, Koreyoshi & Kaburagi, Koichi', 1],
    ['Felt, E. P.', 1],
    ['Hills-Hayes, Brent', 2],
    ['Jiao, Ke-Long & Han, Pei-Jin & Yang, Ming-Lu & Xiong, Ren-Ci', 1],
    ['Kolesik, Peter & Gagné, Raymond J.', 4],
    ['O’Hara, James E. & Cerretti, Pierfilippo & Pape, Thomas', 1],
    ['Pereira-Colavite, Alessandre & Urso-Guimarães, Maria Virginia', 1],
    ['Sforzi, Alessandra & Sommaggio, Daniele', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    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);